Malicious PDF — malware analysis report

Static analysis result for SHA-256 178b3b84328c5fd0…

MALICIOUS

PDF

24.1 KB
MD5: 0e8eb1b081d68edeed365b9ec7e6b683 SHA-1: 4e5bbdcaa521988ac8cbc969840eaeef25467f50 SHA-256: 178b3b84328c5fd018dc0e947a4674b9c4feaba8e68832aec001eea391e11362
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is a PDF containing an XFA form, which is known to be a vector for exploiting Adobe Reader vulnerabilities. Specifically, the 'CVE_2010_0188' heuristic indicates exploitation of the LibTIFF vulnerability. The embedded URL, while seemingly benign, is present within the document structure and could potentially be used by a second-stage payload. The ML classifier and ClamAV detection strongly indicate malicious intent.

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: 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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