Malicious PDF — malware analysis report

Static analysis result for SHA-256 8683fa5ed0f79f51…

MALICIOUS

PDF

12.7 KB
MD5: 42178dcabc9af0576b6ab810b12fcc7d SHA-1: 21f59e4daad8994723c14ad15ef84c388ec52cd7 SHA-256: 8683fa5ed0f79f516324e072fa3829ff445c87fef3a37614ca013a28173fe5ce
128 Risk Score

Malware Insights

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

The sample is a PDF file that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. The heuristic firings indicate that the file contains a malicious XFA payload and is detected by ClamAV as Js.Exploit.HTML-30. The embedded URL, while seemingly benign, is part of the XFA template structure and likely used 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: 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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