Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd4374e11ebdd452…

MALICIOUS

PDF

24.1 KB
MD5: 5f33f1f7b72b555d829bc1a81d7d4fde SHA-1: 938151bd83bf09351f644728879b960583d0c183 SHA-256: fd4374e11ebdd45214ecdeebd9818fb772e7283efa0667b35fbee69f861414b0
128 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1566.001 Spearphishing Attachment T1204 User Execution

The sample is a PDF file that contains an XFA form, which is known to be a vector for exploits. Specifically, the critical heuristic firing indicates exploitation of CVE-2010-0188, a vulnerability in Adobe Reader's LibTIFF component. This exploit likely downloads and executes a second-stage payload. The embedded URL, while seemingly benign, is part of 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: Pdf.Exploit.Agent-36821 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36821
  • 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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