Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eb1d047c52981de…

MALICIOUS

PDF

14.4 KB
MD5: 0dd9993fd2c9b01626a9ef046c5b3356 SHA-1: 70589206ce1a4fec8c513c01ec0bc23c8e4174f4 SHA-256: 9eb1d047c52981de65daa9db77524938aecca2c73a7f22b0b7dfef1793d00089
168 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.002 Malicious File T1059 Command and Scripting Interpreter

The file is a PDF document that leverages XFA forms and is detected as exploiting CVE-2010-0188, a vulnerability in Adobe Reader's handling of LibTIFF. The presence of XFA numeric evaluation stager and ClamAV's detection of Js.Exploit.HTML-30 indicate that the exploit likely involves JavaScript execution to download and run a second-stage payload. The embedded URL, while seemingly benign, is part of the XFA structure and may be used in the exploit chain.

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/