Malicious PDF — malware analysis report

Static analysis result for SHA-256 e22d622b2ba99d6a…

MALICIOUS

PDF

24.1 KB
MD5: 649aecfb679f3f089e9d8d19be2cfc97 SHA-1: e6f26f5fdce9755fba488a2219114ed765458d5e SHA-256: e22d622b2ba99d6a20c7f6801346e1670fc68f9276a75fa5b1ae3ec5856e135c
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution

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

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/