Malicious PDF — malware analysis report

Static analysis result for SHA-256 451a1a092603eb54…

MALICIOUS

PDF

32.1 KB
MD5: 5b8f96777733599c89321577efb3e532 SHA-1: e593837cfae247a22f3ff9dfcee23c210f7df00a SHA-256: 451a1a092603eb5440f3269464463321340c11b046b3664350ea254c79cd732e
70 Risk Score

Malware Insights

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

The PDF file contains an XFA form, which is a known vector for exploitation. ClamAV detected it as Js.Exploit.HTML-30, indicating a JavaScript exploit. The embedded JavaScript, although obfuscated, appears to be constructing a string that likely leads to an exploit payload. The embedded URL is likely related to the exploit delivery mechanism.

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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