Malicious PDF — malware analysis report

Static analysis result for SHA-256 6714ccbd21ff5052…

MALICIOUS

PDF

21.5 KB
MD5: cb8d21d5b24dedaa633304d62489f7ae SHA-1: fe63bfd74d77f685a320131fe16bc7a9905e336c SHA-256: 6714ccbd21ff50522404f822e66abad77f6c7d39562be73822a4cdec6f93a64a
200 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.007 JavaScript

The file is a PDF containing an XFA form that leverages the CVE-2010-0188 vulnerability in Adobe Reader. This exploit is designed to download and execute a secondary payload. The embedded JavaScript, while obfuscated, likely facilitates this download and execution process, indicated by the 'ML_NYX_PDF_MALICIOUS' and 'ClamAV: Pdf.Exploit.Dropped-78' heuristic firings.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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: Pdf.Exploit.Dropped-78 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Dropped-78
  • 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/