Malicious PDF — malware analysis report

Static analysis result for SHA-256 531fc1d9d3c44dad…

MALICIOUS

PDF

12.8 KB
MD5: 5b445ca1d79041bf95a44a0dfa01bc9e SHA-1: e65c5c527b61fb9a6f0b21c8e699921db6d33717 SHA-256: 531fc1d9d3c44dadca5a076f845f6627e20a3b367a40614eae97e77111a8d9c6
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 triggers critical heuristics for CVE-2010-0188, an Adobe Reader exploit targeting XFA forms. ClamAV also identified it as Js.Exploit.HTML-30, indicating embedded JavaScript exploit code. The embedded URL, while seemingly benign, is part of the XFA structure and may be used in conjunction with the exploit.

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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