Malicious PDF — malware analysis report

Static analysis result for SHA-256 621be4d8956f518d…

MALICIOUS

PDF

24.1 KB
MD5: 0a90d72709f8f54afc22825f14a4d1ed SHA-1: 965610f4ccde831231619ed9685cd8824a8d1828 SHA-256: 621be4d8956f518db83a8afd667099dc05111361da6c66b4cd34872485a2661b
160 Risk Score

Malware Insights

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

The sample is a PDF file identified as malicious by multiple heuristics, including a critical detection for CVE-2010-0188, which is an exploit targeting Adobe Reader's LibTIFF component via XFA forms. The ML classifier also strongly indicated maliciousness. The embedded URL, while seemingly benign, is present within the document structure, suggesting it might be part of the exploit chain or a lure.

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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