Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d16635adaa0dea9…

MALICIOUS

PDF

34.9 KB Created: 2009-05-01 21:21:45 Authoring application: tvEeSFCPx (via NeTSnrx)
MD5: c1946e23d14c8341df6d6fc469714163 SHA-1: a56a2e693088c84dd4f521c63a052c8f1a5c5d8a SHA-256: 1d16635adaa0dea9a160ec304d58f7f0512f69e8fcbe0b0b944d05bc535a516e
146 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript with multiple eval() calls, indicating obfuscated malicious code. Heuristics confirm JavaScript actions and eval() usage, and a machine learning classifier strongly flags it as malicious. ClamAV identifies it as Pdf.Dropper.Agent-7236190-0. The JavaScript appears to reconstruct and execute a payload, likely a downloader, based on the presence of eval() and string concatenation patterns.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • ClamAV: Pdf.Dropper.Agent-7236190-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7236190-0
  • eval() call high PDF_EVAL
    eval() found — commonly used for obfuscated exploit execution
  • 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.

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