Malicious PDF — malware analysis report

Static analysis result for SHA-256 985f9c758c725560…

MALICIOUS

PDF

2.7 KB Created: 9756-01-01 Authoring application: 6169
MD5: a3d2743feda631cfda90f82e44e83560 SHA-1: c2405df21c3ec0e7374a537e8d67a63b7f632f97 SHA-256: 985f9c758c725560ec74119a6d465ba561d667b496ba340f2a95a70294454c60
96 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection 'Pdf.Exploit.Agent-36014' strongly suggests it's a known exploit. The extracted JavaScript file shows signs of obfuscation, typical for malware attempting to hide its malicious actions, which likely involve exploiting a PDF vulnerability to execute arbitrary code.

Heuristics 4

  • ClamAV: Pdf.Exploit.Agent-36014 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-36014
  • Suspicious extracted artifact medium 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.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0013_001.js
563b336b28a37dca71213302d2c0c2247260edc7f13fb7afabd2414eb83f40a2
pdf-javascript-stream PDF /JS object 13 at offset 0x328 4793 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 10 eval/decoder/string-building token(s). Carved artifact contains 3 long hex-escaped blob(s).