Malicious PDF — malware analysis report

Static analysis result for SHA-256 5048237a71f9c9bb…

MALICIOUS

PDF

11.9 KB
MD5: b4e910c907e5536d72e962c0b7f48a35 SHA-1: 3e3662cfbcfb71781ae04af93674be29cf695ce3 SHA-256: 5048237a71f9c9bbfc57f84f8a73ee3c6ef0559fbcce209daec5711e3535ca61
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. The embedded JavaScript is likely responsible for executing the malicious payload, although its exact function cannot be determined due to obfuscation. The PDF 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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