Malicious PDF — malware analysis report

Static analysis result for SHA-256 16b0f55d2671402f…

MALICIOUS

PDF

31.6 KB
MD5: 8b3fb65b76ab5f2e91628e4c090fa28e SHA-1: 93864fa99ad38540cb73629cce82e1aa5d7c61f2 SHA-256: 16b0f55d2671402f7b7925ae8b4142bf39ac552af273b4cc1beb5c6c400984bb
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 exploited by CVE-2010-0188. ClamAV also detected it as Js.Exploit.HTML-30, indicating embedded JavaScript used for exploitation. The embedded URL is likely part of the exploit chain, though its specific function is not detailed. The exploit allows for client-side code execution, likely delivered via spearphishing.

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: 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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