Malicious PDF — malware analysis report

Static analysis result for SHA-256 786ff99c2ff01339…

MALICIOUS

PDF

24.3 KB
MD5: 0ae5b151b868ed4af9e7cd5326be2831 SHA-1: 66ab5cc311378e1534e766dfb9826c6d4ef3c578 SHA-256: 786ff99c2ff01339567bc060a999e6c931311b02b050d7937209bd9f348a9927
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The file is a PDF that leverages the XFA form feature to exploit CVE-2010-0188 in Adobe Reader, a critical vulnerability for client execution. ClamAV detection as Js.Exploit.HTML-30 and the ML classifier further indicate malicious intent. The embedded URL, while seemingly benign, is part of the exploit chain and could be used to fetch a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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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