Malicious PDF — malware analysis report

Static analysis result for SHA-256 93070a5bb91fd2b9…

MALICIOUS

PDF

24.1 KB
MD5: f17f775f3cef9f512b0a8c542aa919bb SHA-1: a6356978796d4b4b3ddf046a6572b0ec17c30ac2 SHA-256: 93070a5bb91fd2b9ee3e28785dcf29c16a896a47d8125d14cd06eed1b07c4d61
130 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1559.001 Component Object Model Hijacking

The sample is a PDF file that contains an XFA form, which is known to be a vector for exploiting vulnerabilities. Specifically, the 'CVE_2010_0188' heuristic firing indicates the use of the LibTIFF XFA image exploit. ClamAV also detected the file as 'Pdf.Exploit.Agent-36821'. The embedded URL, while not directly malicious in reputation, is part of the XFA template structure and likely related to the exploit delivery mechanism.

Heuristics 5

  • Adobe Reader LibTIFF XFA image exploit — CVE-2010-0188 critical CVE likely CVE_2010_0188
    PDF contains the CVE-2010-0188 exploit template: XFA JavaScript heap-spray setup, a generated TIFF image payload, and assignment of that TIFF data to an XFA image field rawValue to trigger Adobe Reader's LibTIFF parser.
  • ClamAV: Pdf.Exploit.Agent-36821 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36821
  • 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/