Malicious PDF — malware analysis report

Static analysis result for SHA-256 265d5685d6d8ef62…

MALICIOUS

PDF

12.8 KB
MD5: 2570214a2f2420d28a11d7a843c421d4 SHA-1: 12e0e170638b2fa0973059583f6202b95b83f601 SHA-256: 265d5685d6d8ef629fb6c0b650393c813ea70c02297d4b9bf2125c921a441c0c
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The PDF file contains XFA (XML Forms Architecture) data, which is known to be a vector for exploits. Specifically, the CVE-2010-0188 heuristic indicates exploitation of a LibTIFF vulnerability within Adobe Reader's XFA processing. ClamAV also detected this as Js.Exploit.HTML-30, suggesting JavaScript-based exploitation. The embedded URL, while seemingly benign, is likely part of the exploit chain. The script content is too obfuscated to determine its exact function, but the heuristics strongly suggest it's designed to download and execute a second-stage payload.

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: Js.Exploit.HTML-30 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Exploit.HTML-30
  • 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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