Malicious PDF — malware analysis report

Static analysis result for SHA-256 86ebe9449d9ebeb6…

MALICIOUS

PDF

24.2 KB
MD5: f2e22aeae211fa5b23e77aa75c4d5254 SHA-1: e8c4f397a9b169c4666230c88452ba64cda06a6f SHA-256: 86ebe9449d9ebeb6523ab91c5f99775cecaa5d7b559e5236ac8c3c1b258f6105
172 Risk Score

Malware Insights

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

The PDF file contains XFA (XML Forms Architecture) data which is known to be a vector for exploits. Specifically, the CVE-2010-0188 exploit was detected, targeting a vulnerability in LibTIFF within Adobe Reader. A JavaScript stager was recovered, indicating the likely intent to download and execute a second-stage payload. The embedded URL is likely part of the exploit chain.

Heuristics 6

  • 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: Js.Exploit.HTML-30 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Js.Exploit.HTML-30
  • XFA numeric JavaScript stager high PDF_XFA_NUMERIC_JS_STAGER
    PDF XFA script reconstructs a hidden JavaScript stage from numeric field data or a character table, then evals the result. The decoder is gated on XFA script, numeric staging, and recovered exploit-like JavaScript or shellcode markers.
  • XFA form low PDF_XFA
    PDF uses XML Forms Architecture — can contain script logic
  • Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • 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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
xfa_numeric_stage_000.js
c67aa41b5d6d4ceb4baa69e058171263baabe4ec813dd06dba2f753880714985
deobfuscated-js XFA rawValue numeric decoded JavaScript (raw) at offset 0x3A8 3743 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 5 eval/decoder/string-building token(s). Carved artifact contains 3 long base64-like blob(s).