Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c50b2eb2c89310d…

MALICIOUS

PDF

14.3 KB
MD5: f38199f002aea0cbea559423d50dbd97 SHA-1: 88f78bbd5d2fa379150b1996b24bc841a0a8880e SHA-256: 9c50b2eb2c89310d5e5c4b3b16c9a8d700950feb2a9e2099084e096ad55d3107
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious Link/Object: Malicious File T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains XFA (XML Forms Architecture) content, 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. The ClamAV detection 'Js.Exploit.HTML-30' further suggests JavaScript-based exploitation. The embedded URL, while seemingly benign, is part of the XFA structure and could be used in conjunction with the exploit. The XFA numeric stager points to a mechanism for evaluating and executing code.

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: Js.Exploit.HTML-30 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Exploit.HTML-30
  • XFA numeric character-table eval stager high PDF_XFA_NUMERIC_EVAL_STAGER
    PDF XFA initialize script reads numeric form data from rawValue, maps the values through a short character table, and evals the reconstructed stage. This is an exploit-kit staging technique even when the final decoded layer remains encoded.
  • 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/