Malicious PDF — malware analysis report

Static analysis result for SHA-256 2446c3421fa65b0f…

MALICIOUS

PDF

14.4 KB
MD5: d7654a1a9d39edee5dddaed45b61c5e7 SHA-1: 830634ffe0920d3ebccffc494a42b585410245cb SHA-256: 2446c3421fa65b0fb073d1bec46c38f694a4feb4e1bb85f7278db12e10e891e9
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File

The sample is a PDF file that leverages the XFA (XML Forms Architecture) feature to exploit CVE-2010-0188 in Adobe Reader. The embedded XFA payload, identified by ClamAV as Js.Exploit.HTML-30, likely downloads and executes a second-stage payload. The obfuscated document body contains JavaScript-like code that further suggests malicious intent.

Heuristics 5

  • 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 numeric character-table eval stager high PDF_XFA_NUMERIC_EVAL_STAGER
    PDF XFA initialize script reads numeric form data from rawValue, maps the values through a short character table, and evals the reconstructed stage. This is an exploit-kit staging technique even when the final decoded layer remains encoded.
  • 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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