Malicious PDF — malware analysis report

Static analysis result for SHA-256 e89842ff3b6c63a8…

MALICIOUS

PDF

14.3 KB
MD5: 302e8211effe2e705ba8b2f0700220e3 SHA-1: b27189ecec5cd74c5e0d6081cdcb848b9759d327 SHA-256: e89842ff3b6c63a83028320a4c988e205ff384e92dc68c2bdb64c7628b9910b7
168 Risk Score

Malware Insights

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

The sample is a PDF file that exploits CVE-2010-0188, a vulnerability in Adobe Reader related to XFA forms. The heuristic firings indicate that the PDF uses an XFA numeric stager to evaluate content, which is a common technique for exploiting this vulnerability. The embedded URL is likely related to the XFA template, but the primary exploit mechanism is the CVE-2010-0188 vulnerability. The ClamAV detection further confirms its malicious nature as a dropped exploit.

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/