Malicious PDF — malware analysis report

Static analysis result for SHA-256 df0e43840a01effe…

MALICIOUS

PDF

34.5 KB
MD5: 687fb5e71b1a18a0963f5795542ceb69 SHA-1: 1c2942eab0a8ed5d3cc3a0eb65eb7f0e2c2820f4 SHA-256: df0e43840a01effe8d9a3f4a2b557c239cbf43e73859eda2fedfdb39d6e72451
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 as Heuristics.PDF.ObfuscatedNameObject. The JavaScript is likely responsible for executing a malicious payload, though its exact function cannot be determined due to obfuscation. The file is classified as a malicious PDF with an unknown family due to the lack of specific indicators beyond the obfuscated script.

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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