Malicious PDF — malware analysis report

Static analysis result for SHA-256 31e5d4bee3163662…

MALICIOUS

PDF

31.9 KB
MD5: 85973889c784161131995783fa9cc383 SHA-1: 5e7657be46fa6df88bf361c71d68375260701b56 SHA-256: 31e5d4bee31636629b224df6ac567afd1827f50d15d2ad0bc593381aef522f08
70 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file utilizes XFA forms, a known vector for exploiting vulnerabilities. ClamAV detected it as Js.Exploit.HTML-30, indicating embedded JavaScript is likely used for exploitation. The embedded URL, while seemingly benign, is part of the exploit chain. The script's intent is to download and execute a second-stage payload.

Heuristics 4

  • ClamAV: Js.Exploit.HTML-30 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Exploit.HTML-30
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.xfa.org/schema/xfa-template/2.5/

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