Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8b678a41d6cbd18…

MALICIOUS

PDF

14.2 KB
MD5: 882094ad68011ce230e9e981e520ce52 SHA-1: b1ac101536db37c22d963fdd94ad09a63849ab05 SHA-256: f8b678a41d6cbd184b4d1b655726e21c58d7c9084c5909679369a648e846e128
128 Risk Score

Malware Insights

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

The file is a PDF document that triggers a critical heuristic for CVE-2010-0188, an exploit targeting Adobe Reader's LibTIFF XFA image handling. Additionally, ClamAV detected it as Js.Exploit.HTML-30, indicating embedded JavaScript exploitation. The embedded URL, while seemingly benign, is part of the XFA template structure and may be used in the exploit chain. The script likely downloads and executes a second-stage payload, contributing to the overall malicious intent.

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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