Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8c5242b94e5d737…

MALICIOUS

PDF

24.1 KB
MD5: c5f3fddf2c7f975d0357a9891628c168 SHA-1: 370ba86654615b3efd30a18e0e92090b9c5d1b49 SHA-256: c8c5242b94e5d73740949d43017ee6a461250c3633fa303d9c6708259c89afba
130 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The sample is a PDF document identified as malicious by ClamAV and exhibits critical heuristic firings for CVE-2010-0188, an Adobe Reader LibTIFF XFA image exploit. The embedded XFA script contains obfuscated JavaScript that, when deobfuscated, likely attempts to download and execute a secondary payload from the provided URL. The document body itself is heavily obfuscated and appears to be part of the exploit mechanism rather than user-facing content.

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/