Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2710dc3c8b069d3…

MALICIOUS

PDF

32.0 KB
MD5: 60eaa91d9c8aef8d55eff13a7e33b3d8 SHA-1: 3e163d9fbb486bcee7b35a01e3dd95d6be8fc2ec SHA-256: b2710dc3c8b069d3b608743f3062b3e57c1ab7ed5e11288b57908ed29fea68e7
148 Risk Score

Malware Insights

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

The PDF file contains an XFA form with executable script, identified as a numeric evaluation stager. ClamAV detected this as Js.Exploit.HTML-30, indicating it's designed to exploit vulnerabilities. The embedded URL is likely used to download a secondary payload. The XFA script functionality points towards an attack pattern involving user interaction to trigger an exploit.

Heuristics 5

  • XFA form contains risky executable script high CVE related PDF_XFA_SCRIPT
    PDF embeds an XFA form whose script block contains exploit, submission/launch, or shell-execution primitives. Ordinary LiveCycle print/update scripts are left as generic XFA/JS signals unless stronger behavior is present.
  • 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/