PDF Analyzer
Multi-layered static analysis and sanitization for suspicious PDFs with threat intelligence integration.
Baseline review at submission: an accuracy and overt-behavior check, not a full security audit, and it does not cover later changes to the repository. Learn more about our security review process.
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PDF Analyzer dissects suspicious PDFs through six layers of static analysis and threat intelligence. It never renders a PDF, never executes JavaScript, and never opens embedded files.
What it does
- Six analysis layers: structure parsing, action detection, JavaScript detection, embedded content cataloging, obfuscation detection, and VirusTotal hash reputation lookup
- Cleaning and sanitization: strips malicious elements (OpenAction, JavaScript, embedded files, dangerous URI schemes) and outputs a safe copy while preserving document layout
- IOC extraction: hashes, URLs, and embedded filenames ready to feed into detection tools
- Risk scoring: evidence-based verdict (LOW/MEDIUM/HIGH/CRITICAL) with per-layer breakdown
How it works
All analysis is static - files are read as raw bytes, parsed with regex and heuristics, and never rendered or executed. VirusTotal integration performs hash-only lookups (the file is never uploaded). Cleaning is powered by pdf-defang for proper PDF parsing, with additional custom sanitization for URL defanging in annotations and content streams.