Malicious PDF — malware analysis report

Static analysis result for SHA-256 89f6a6135359859c…

MALICIOUS

PDF

28.7 KB
MD5: c0eda9585e6e2bf87aae6b889e0765b7 SHA-1: fba7d75ba8015988797de392c1af898482f4ef68 SHA-256: 89f6a6135359859c0905eb0237e7482aea753c3b385fbdbf6e1f7478c8ccc787
168 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.001 PowerShell

The sample is a PDF file that leverages XFA forms to exploit CVE-2010-0188 in Adobe Reader. The embedded XFA numeric stager indicates an attempt to execute code. The primary function appears to be the exploitation of a known vulnerability for initial code execution, likely to download and run a secondary payload. The extracted URL is likely related to the XFA template but could also be a lure.

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.Agent-36825 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36825
  • 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/