Malicious PDF — malware analysis report

Static analysis result for SHA-256 4aa14db07caaf181…

MALICIOUS

PDF

8.3 KB
MD5: 7cf78359d117923f066f956f9db39de4 SHA-1: fb4de7c2e9f1695b36b58658f0f1ce84404df979 SHA-256: 4aa14db07caaf1819f89d59ff60d19f98c8ac9e37b270c82a523b09f5d8292b1
78 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains obfuscated JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristic firings. ClamAV also flagged it as Heuristics.PDF.ObfuscatedNameObject. The JavaScript is likely responsible for executing the malicious payload, though its exact function cannot be determined due to obfuscation. The differential parser also failed, suggesting a potentially complex or malformed structure.

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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