Malicious PDF — malware analysis report

Static analysis result for SHA-256 42880139dde0a0d3…

MALICIOUS

PDF

24.1 KB
MD5: 5d6cdd7aab40a899bd77bf5b78e673a5 SHA-1: ccec2d8b923a5ae82c06e764e4c3d14a89d4625d SHA-256: 42880139dde0a0d32b34e23cd398d9a123a6a95cb7915cff38ac657e41c92f8f
128 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is a PDF file that contains an XFA form, which is a known vector for exploiting vulnerabilities. Specifically, the critical heuristic firing indicates a match for CVE-2010-0188, an Adobe Reader LibTIFF XFA image exploit. This exploit likely downloads and executes a second-stage payload. The embedded URL, while seemingly benign, is part of the XFA structure and could be involved in the exploit chain.

Heuristics 4

  • 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
  • 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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