Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb54f49eed582098…

MALICIOUS

PDF

24.1 KB
MD5: 99b3fd87aca713f281bd1418b990141e SHA-1: 8fcb74f6f503721023d65999163334d27729ba87 SHA-256: eb54f49eed58209847c5bf65b02d39c520b8be55945040a889c7992caea217ea
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 exploitation. Specifically, the critical heuristic firing indicates a match for CVE-2010-0188, an Adobe Reader LibTIFF XFA image exploit. This suggests the file is designed to exploit this vulnerability upon opening in a vulnerable version of Adobe Reader, likely to download and execute 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/