Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0b283f4c456dfbe…

MALICIOUS

PDF

28.3 KB
MD5: e9d33318e29e38f3fb225227b51f4f40 SHA-1: d668fea9d1704c45c0d8607c6ff13fd462534457 SHA-256: d0b283f4c456dfbe9ea83502ec554adf537a0804fde652b8c61802812b5043a2
100 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF utilizes XFA forms, a known vector for exploitation. ClamAV detected it as Js.Exploit.HTML-30, indicating JavaScript-based exploitation. The embedded URL, while seemingly benign, is part of the exploit chain. The ML classifier strongly flags this PDF as malicious. The script logic appears to be obfuscated, but the overall pattern suggests it's designed to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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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