Malicious PDF — malware analysis report

Static analysis result for SHA-256 39a3efdde0f58605…

MALICIOUS

PDF

34.7 KB
MD5: ec011b956fa1f296faa5d94276298aa7 SHA-1: aa6b7d8e03de102ab4fd90c7f963e0f300b56c99 SHA-256: 39a3efdde0f586053fa6b0e94828b9de02c1c2468b5cd27b4fdd7e6551b1706a
108 Risk Score

Malware Insights

The PDF file was flagged as malicious by both ClamAV and an ML classifier. Heuristics indicate the presence of embedded JavaScript, a common technique for exploiting PDF vulnerabilities. The obfuscated nature of the PDF, as suggested by ClamAV's detection name, further supports a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Heuristics.PDF.ObfuscatedNameObject critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Heuristics.PDF.ObfuscatedNameObject
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.

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