Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d451f800b27a81c…

MALICIOUS

PDF

12.1 KB
MD5: 4fb6349641e4ebd179fb29492b5a5ab7 SHA-1: 0db79fbce12c255cd0376a2472cf90c6df82144c SHA-256: 2d451f800b27a81c1640b8afb9973651a8616e21da67dcd60a3009cf6eb0fdfa
78 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains obfuscated JavaScript, as indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV also flagged it with Heuristics.PDF.ObfuscatedNameObject, confirming its malicious nature. The embedded JavaScript is likely responsible for executing a secondary payload, though its exact function cannot be determined due to obfuscation. The attack pattern involves luring the user into opening a malicious PDF that leverages JavaScript for execution.

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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