Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc4c2a09f4d7ab0a…

MALICIOUS

PDF

14.3 KB
MD5: b282a41accb5e8868e177afd57c2c9fa SHA-1: ec79d90e4650ad406cec0a7fe8f44ac29a4990c7 SHA-256: cc4c2a09f4d7ab0aebe2fffcf866d26bd7ab31c2b060b76b381be2bb3c23c7fd
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.001 PowerShell

The sample is a PDF file that leverages the CVE-2010-0188 exploit targeting Adobe Reader's XFA functionality. The ClamAV heuristic 'Js.Exploit.HTML-30' suggests embedded JavaScript is used in the exploit chain. The embedded URL is likely related to the exploit's functionality. The document body contains obfuscated JavaScript that appears to be part of the exploit stager.

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/