Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b6744634607c5f5…

MALICIOUS

PDF

12.1 KB
MD5: bae8450a0b09bbdf7eeff143ff0540f4 SHA-1: d6918a0a6c63f2631dff869ae0eb31244c841ba7 SHA-256: 3b6744634607c5f5456b193d32181d1e83ffe9a2f8fa3c70857f22a77e8fbf54
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 heuristic firings. 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 exact nature of the payload is not discernible from the provided evidence.

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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