Malicious PDF — malware analysis report

Static analysis result for SHA-256 78d799e8e1d37b89…

MALICIOUS

PDF

17.9 KB
MD5: ad538c1cda9e2b0931a8d637924552ff SHA-1: 697ec7b839b6f994188aff845e0500b6be9f9dd5 SHA-256: 78d799e8e1d37b892cd382ae98d9efef9b7dbfc5fec082e059753f88526230c5
168 Risk Score

Malware Insights

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

The sample is a PDF document that leverages the CVE-2010-0188 vulnerability in Adobe Reader's handling of XFA forms. The XFA numeric stager indicates an attempt to evaluate code, likely to download and execute a secondary payload. The embedded URL is likely part of this 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: Pdf.Exploit.Agent-36831 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36831
  • 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/