Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdcc37640b0514a5…

MALICIOUS

PDF

32.0 KB
MD5: f46c6721af41ca2b9a4652ecf4a88510 SHA-1: 1dd83875eb63f089fd3cb108d4c51e552cdef4a9 SHA-256: cdcc37640b0514a59151eae5b6dbf58268246fd8d2532e89c92aee368f5ce604
100 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious File

The PDF utilizes XFA forms, a known vector for exploitation. ClamAV detected this as Js.Exploit.HTML-30, indicating JavaScript-based exploitation. The embedded URL points to an XFA schema, further supporting this. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves exploiting vulnerabilities within the XFA form processing to execute malicious JavaScript.

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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