Malicious PDF — malware analysis report

Static analysis result for SHA-256 cceaeb49834b10b2…

MALICIOUS

PDF

14.3 KB
MD5: 9466c8e2ecac2d86c58fd9e85f91367b SHA-1: 7558d8018c343c15f5ad4a33df4c56e0622d6680 SHA-256: cceaeb49834b10b2c555736bc4b0e611518c65c0145f4282243c8ad5ad5ff132
168 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is a PDF file that leverages the CVE-2010-0188 vulnerability via XFA forms. The ClamAV heuristic 'Js.Exploit.HTML-30' further indicates malicious JavaScript execution. The embedded URL is likely part of the exploit chain. The XFA numeric eval stager suggests a mechanism for evaluating and executing code.

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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