Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff04c5a22fac600d…

MALICIOUS

PDF

9.2 KB
MD5: 5d29fede2a6d75242fa8632017e244d2 SHA-1: d5b37b605eeaedeade0c210ae497647685f7691f SHA-256: ff04c5a22fac600d8bd908d840e6ff0e4f7c2c3efd7efb46b0f27c9496a54791
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 heuristics. ClamAV also flagged it as Heuristics.PDF.ObfuscatedNameObject. The JavaScript is likely responsible for executing the malicious payload, but its exact function could not be determined due to obfuscation. The differential parser also failed, suggesting further attempts to hide malicious content.

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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