Malicious PDF — malware analysis report

Static analysis result for SHA-256 e98587e3bf99d319…

MALICIOUS

PDF

1.95 MB
MD5: 8c0839d45340d834d602b24097982c02 SHA-1: c63cc43c39f206072ac5854d3ca9c53c8fe6b527 SHA-256: e98587e3bf99d319a0196911060cd472f6a1715d7f954dfb547f9d767c0fbf3c
78 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded and obfuscated JavaScript, as indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV also flagged this file with a critical heuristic for obfuscated objects. The presence of JavaScript suggests an attempt to execute malicious code, likely to download and run a secondary payload. The differential parser failure indicates a high degree of obfuscation.

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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