Malicious PDF — malware analysis report

Static analysis result for SHA-256 0abf12e97e81a8a8…

MALICIOUS

PDF

24.2 KB
MD5: aa2f57e2014ff8c8d1d5cc3fd65870c5 SHA-1: 0edf5d66cca5a3d7200545bbed577ca6d21e63f3 SHA-256: 0abf12e97e81a8a80e228492039fb982d29bb149fd169efc6992bf91754e5520
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 finding for CVE-2010-0188, an Adobe Reader LibTIFF XFA exploit. The ML classifier also flagged it with high confidence. The embedded URL, while seemingly benign, is part of the XFA structure which is exploited. The document body contains obfuscated JavaScript-like code that likely attempts to download and execute 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: 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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