How do I install analyzing-malicious-pdf-with-peepdf?

Run `npx skills install mukul975/Anthropic-Cybersecurity-Skills/analyzing-malicious-pdf-with-peepdf` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does analyzing-malicious-pdf-with-peepdf support?

analyzing-malicious-pdf-with-peepdf works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Is analyzing-malicious-pdf-with-peepdf free to use?

Yes. analyzing-malicious-pdf-with-peepdf is free to install and use. It is available from the open explainx.ai skill registry published by mukul975.

Where can I read ratings and reviews for analyzing-malicious-pdf-with-peepdf?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install analyzing-malicious-pdf-with-peepdf?

Run `npx skills install mukul975/Anthropic-Cybersecurity-Skills/analyzing-malicious-pdf-with-peepdf` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does analyzing-malicious-pdf-with-peepdf support?

analyzing-malicious-pdf-with-peepdf works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Is analyzing-malicious-pdf-with-peepdf free to use?

Yes. analyzing-malicious-pdf-with-peepdf is free to install and use. It is available from the open explainx.ai skill registry published by mukul975.

Where can I read ratings and reviews for analyzing-malicious-pdf-with-peepdf?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install analyzing-malicious-pdf-with-peepdf?

Run `npx skills install mukul975/Anthropic-Cybersecurity-Skills/analyzing-malicious-pdf-with-peepdf` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does analyzing-malicious-pdf-with-peepdf support?

analyzing-malicious-pdf-with-peepdf works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Is analyzing-malicious-pdf-with-peepdf free to use?

Yes. analyzing-malicious-pdf-with-peepdf is free to install and use. It is available from the open explainx.ai skill registry published by mukul975.

Where can I read ratings and reviews for analyzing-malicious-pdf-with-peepdf?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install analyzing-malicious-pdf-with-peepdf?

Run `npx skills install mukul975/Anthropic-Cybersecurity-Skills/analyzing-malicious-pdf-with-peepdf` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does analyzing-malicious-pdf-with-peepdf support?

analyzing-malicious-pdf-with-peepdf works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Is analyzing-malicious-pdf-with-peepdf free to use?

Yes. analyzing-malicious-pdf-with-peepdf is free to install and use. It is available from the open explainx.ai skill registry published by mukul975.

Where can I read ratings and reviews for analyzing-malicious-pdf-with-peepdf?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install analyzing-malicious-pdf-with-peepdf?

Run `npx skills install mukul975/Anthropic-Cybersecurity-Skills/analyzing-malicious-pdf-with-peepdf` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does analyzing-malicious-pdf-with-peepdf support?

analyzing-malicious-pdf-with-peepdf works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Is analyzing-malicious-pdf-with-peepdf free to use?

Yes. analyzing-malicious-pdf-with-peepdf is free to install and use. It is available from the open explainx.ai skill registry published by mukul975.

Where can I read ratings and reviews for analyzing-malicious-pdf-with-peepdf?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install analyzing-malicious-pdf-with-peepdf?

Run `npx skills install mukul975/Anthropic-Cybersecurity-Skills/analyzing-malicious-pdf-with-peepdf` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does analyzing-malicious-pdf-with-peepdf support?

analyzing-malicious-pdf-with-peepdf works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Is analyzing-malicious-pdf-with-peepdf free to use?

Yes. analyzing-malicious-pdf-with-peepdf is free to install and use. It is available from the open explainx.ai skill registry published by mukul975.

Where can I read ratings and reviews for analyzing-malicious-pdf-with-peepdf?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install analyzing-malicious-pdf-with-peepdf?

Run `npx skills install mukul975/Anthropic-Cybersecurity-Skills/analyzing-malicious-pdf-with-peepdf` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does analyzing-malicious-pdf-with-peepdf support?

analyzing-malicious-pdf-with-peepdf works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Is analyzing-malicious-pdf-with-peepdf free to use?

Yes. analyzing-malicious-pdf-with-peepdf is free to install and use. It is available from the open explainx.ai skill registry published by mukul975.

Where can I read ratings and reviews for analyzing-malicious-pdf-with-peepdf?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install analyzing-malicious-pdf-with-peepdf?

Run `npx skills install mukul975/Anthropic-Cybersecurity-Skills/analyzing-malicious-pdf-with-peepdf` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does analyzing-malicious-pdf-with-peepdf support?

analyzing-malicious-pdf-with-peepdf works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Is analyzing-malicious-pdf-with-peepdf free to use?

Yes. analyzing-malicious-pdf-with-peepdf is free to install and use. It is available from the open explainx.ai skill registry published by mukul975.

Where can I read ratings and reviews for analyzing-malicious-pdf-with-peepdf?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install analyzing-malicious-pdf-with-peepdf?

Run `npx skills install mukul975/Anthropic-Cybersecurity-Skills/analyzing-malicious-pdf-with-peepdf` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does analyzing-malicious-pdf-with-peepdf support?

analyzing-malicious-pdf-with-peepdf works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Is analyzing-malicious-pdf-with-peepdf free to use?

Yes. analyzing-malicious-pdf-with-peepdf is free to install and use. It is available from the open explainx.ai skill registry published by mukul975.

Where can I read ratings and reviews for analyzing-malicious-pdf-with-peepdf?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install analyzing-malicious-pdf-with-peepdf?

Run `npx skills install mukul975/Anthropic-Cybersecurity-Skills/analyzing-malicious-pdf-with-peepdf` in your terminal. You need to have run `npx skills init` once in your project first.

Which agent frameworks does analyzing-malicious-pdf-with-peepdf support?

analyzing-malicious-pdf-with-peepdf works with any agent framework supported by the Skills registry, including Claude Code, Cursor, GitHub Copilot, Cline, Codex, and Gemini CLI.

Is analyzing-malicious-pdf-with-peepdf free to use?

Yes. analyzing-malicious-pdf-with-peepdf is free to install and use. It is available from the open explainx.ai skill registry published by mukul975.

Where can I read ratings and reviews for analyzing-malicious-pdf-with-peepdf?

Community ratings and review text appear on this explainx.ai skill page below the description. Reviews use a 1–5 scale and may include short written feedback from signed-in members.

How do I install analyzing-malicious-pdf-with-peepdf?

Run `npx skills install mukul975/Anthropic-Cybersecurity-Skills/analyzing-malicious-pdf-with-peepdf` in your terminal. You need to have run `npx skills init` once in your project first.

analyzing-malicious-pdf-with-peepdf

analyzing-malicious-pdf-with-peepdf▌

mukul975/Anthropic-Cybersecurity-Skills · updated May 25, 2026

MDX-style export adds YAML metadata + attribution linking explainx.ai and this canonical listing URL.

$npx skills install mukul975/Anthropic-Cybersecurity-Skills/analyzing-malicious-pdf-with-peepdf

0 commentsdiscussion

summary

Perform static analysis of malicious PDF documents using peepdf, pdfid, and pdf-parser to extract embedded JavaScript, shellcode, and suspicious objects.

skill.md

name	analyzing-malicious-pdf-with-peepdf
description	Perform static analysis of malicious PDF documents using peepdf, pdfid, and pdf-parser to extract embedded JavaScript, shellcode, and suspicious objects.
domain	cybersecurity
subdomain	malware-analysis
tags	- malware-analysis - pdf - peepdf - pdfid - pdf-parser - static-analysis - reverse-engineering - dfir
version	'1.0'
author	mahipal
license	Apache-2.0
nist_csf	- DE.AE-02 - RS.AN-03 - ID.RA-01 - DE.CM-01

Analyzing Malicious PDF with peepdf

When to Use

When triaging suspicious PDF attachments from phishing emails
During malware analysis of PDF-based exploit documents
When extracting embedded JavaScript, shellcode, or executables from PDFs
For forensic examination of weaponized document artifacts
When building detection signatures for PDF-based threats

Prerequisites

Python 3.8+ with peepdf-3 installed (pip install peepdf-3)
pdfid.py and pdf-parser.py from Didier Stevens suite
Isolated analysis environment (VM or sandbox)
Optional: PyV8 for JavaScript emulation within peepdf
Optional: Pylibemu for shellcode analysis

Workflow

Triage with pdfid: Scan PDF for suspicious keywords (/JS, /JavaScript, /OpenAction, /Launch, /EmbeddedFile).
Interactive Analysis: Open PDF in peepdf interactive mode to explore object structure.
Identify Suspicious Objects: Locate objects containing JavaScript, streams, or encoded data.
Extract Content: Dump suspicious streams and decode filters (FlateDecode, ASCIIHexDecode).
Deobfuscate JavaScript: Analyze extracted JS for shellcode, heap sprays, or exploit code.
Check VirusTotal: Use peepdf vtcheck to cross-reference file hash with AV detections.
Generate IOCs: Extract URLs, domains, hashes, and shellcode signatures.

Key Concepts

Concept	Description
/OpenAction	Automatic action executed when PDF is opened
/JavaScript /JS	Embedded JavaScript code in PDF objects
/Launch	Action that launches external applications
/EmbeddedFile	File embedded within the PDF structure
FlateDecode	zlib compression filter used to hide content
Object Streams	PDF objects stored in compressed streams

Tools & Systems

Tool	Purpose
peepdf / peepdf-3	Interactive PDF analysis with JS emulation
pdfid.py	Quick triage scanning for suspicious keywords
pdf-parser.py	Deep object-level PDF parsing
VirusTotal	Hash lookup and AV detection cross-reference
CyberChef	Decode and transform extracted payloads

Output Format

Analysis Report: PDF-MAL-[DATE]-[SEQ]
File: [filename.pdf]
SHA-256: [hash]
Suspicious Keywords: [/JS, /OpenAction, etc.]
Objects with JavaScript: [Object IDs]
Extracted URLs: [List]
Shellcode Detected: [Yes/No]
Embedded Files: [Count and types]
VirusTotal Detections: [X/Y engines]
Risk Level: [Critical/High/Medium/Low]

how to use analyzing-malicious-pdf-with-peepdf

How to use analyzing-malicious-pdf-with-peepdf on Cursor

AI-first code editor with Composer

Prerequisites

Before installing skills in Cursor, ensure your development environment meets these requirements:

›Cursor installed and configured on your development machine
›Node.js version 16.0+ with npm package manager (verify with node --version)
›Active project directory or workspace where you want to add analyzing-malicious-pdf-with-peepdf

Execute installation command

Execute the skills CLI command in your project's root directory to begin installation:

$npx skills install mukul975/Anthropic-Cybersecurity-Skills/analyzing-malicious-pdf-with-peepdf

The skills CLI fetches analyzing-malicious-pdf-with-peepdf from GitHub repository mukul975/Anthropic-Cybersecurity-Skills and configures it for Cursor.

Select Cursor when prompted

The CLI will show a list of available agents. Use arrow keys to navigate and space to select Cursor:

◆ Which agents do you want to install to?

│

│ ── Universal (.agents/skills) ── always included ────

│ • Amp

│ • Antigravity

│ • Cline

│ • Codex

│ ●Cursor(selected)

│ • Cursor

│ • Windsurf

Verify installation

Confirm successful installation by checking the skill directory location:

.cursor/skills/analyzing-malicious-pdf-with-peepdf

Reload or restart Cursor to activate analyzing-malicious-pdf-with-peepdf. Access the skill through slash commands (e.g., /analyzing-malicious-pdf-with-peepdf) or your agent's skill management interface.

⚠

Security & Verification Notice

We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.

Skills execute code in your development environment. Always verify the publisher's identity, review recent commits, and test in isolated environments before production deployment.

Additional Resources

›View source code on GitHub ›Skills CLI documentation ›Learn more about Cursor ›What are agent skills?

List & Monetize Your Skill

Submit your Claude Code skill and start earning

GET_STARTED →

Use Cases▌

Task Automation & Efficiency

Automate repetitive workflows and reduce manual effort

Example

Generate reports, summarize documents, draft communications

✓

Save 3-5 hours per week on routine tasks

Knowledge Enhancement

Learn new skills, understand complex topics, get expert guidance

Example

Explain concepts, provide examples, suggest learning resources

✓

Accelerate learning and skill development by 2x

Quality Improvement

Enhance output quality through reviews, suggestions, and refinements

Example

Review drafts, suggest improvements, catch errors

✓

Improve work quality by 30-40% with less effort

Implementation Guide▌

Prerequisites

›Claude Desktop or compatible AI client with skill support
›Clear understanding of task or problem to solve
›Willingness to iterate and refine outputs

Time Estimate

15-45 minutes depending on use case complexity

Installation Steps

1.Install skill using provided installation command
2.Test with simple use case relevant to your work
3.Evaluate output quality and relevance
4.Iterate on prompts to improve results
5.Integrate into regular workflow if valuable

Common Pitfalls

⚠Expecting perfect results without iteration
⚠Not providing enough context in prompts
⚠Using skill for tasks outside its intended scope
⚠Accepting outputs without review and validation

Best Practices▌

✓ Do

+Start with clear, specific prompts
+Provide relevant context and constraints
+Review and refine all outputs before using
+Iterate to improve output quality
+Document successful prompt patterns

✗ Don't

−Don't use without understanding skill limitations
−Don't skip validation of outputs
−Don't share sensitive information in prompts
−Don't expect skill to replace human judgment

💡 Pro Tips

★Be specific about desired format and style
★Ask for multiple options to choose from
★Request explanations to understand reasoning
★Combine AI efficiency with human expertise

When to Use This▌

✓ Use When

Use when skill capabilities match your task, clear ROI on time saved, and you can validate outputs. Best for repetitive tasks, learning, and quality improvement.

✗ Avoid When

Avoid when task requires deep expertise you can't validate, involves sensitive decisions, or when learning process is more valuable than speed of completion.

Learning Path▌

1Familiarize yourself with skill capabilities and limitations
2Start with low-risk, non-critical tasks
3Progress to more complex and valuable use cases
4Build expertise through regular use and experimentation

Discussion

Product Hunt–style comments (not star reviews)

No comments yet — start the thread.

general reviews

Ratings

4.7★★★★★39 reviews

★★★★★Dhruvi Jain· Dec 28, 2024
analyzing-malicious-pdf-with-peepdf is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.
★★★★★Camila Patel· Dec 24, 2024
Keeps context tight: analyzing-malicious-pdf-with-peepdf is the kind of skill you can hand to a new teammate without a long onboarding doc.
★★★★★Zaid Rao· Dec 16, 2024
Solid pick for teams standardizing on skills: analyzing-malicious-pdf-with-peepdf is focused, and the summary matches what you get after install.
★★★★★Rahul Santra· Nov 27, 2024
Keeps context tight: analyzing-malicious-pdf-with-peepdf is the kind of skill you can hand to a new teammate without a long onboarding doc.
★★★★★Oshnikdeep· Nov 19, 2024
analyzing-malicious-pdf-with-peepdf fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
★★★★★Ama Lopez· Nov 7, 2024
analyzing-malicious-pdf-with-peepdf has been reliable in day-to-day use. Documentation quality is above average for community skills.
★★★★★Henry Reddy· Oct 26, 2024
analyzing-malicious-pdf-with-peepdf fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.
★★★★★Pratham Ware· Oct 18, 2024
I recommend analyzing-malicious-pdf-with-peepdf for anyone iterating fast on agent tooling; clear intent and a small, reviewable surface area.
★★★★★Ganesh Mohane· Oct 10, 2024
analyzing-malicious-pdf-with-peepdf has been reliable in day-to-day use. Documentation quality is above average for community skills.
★★★★★Maya Shah· Oct 2, 2024
Keeps context tight: analyzing-malicious-pdf-with-peepdf is the kind of skill you can hand to a new teammate without a long onboarding doc.

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