Malicious PDF — malware analysis report

Static analysis result for SHA-256 e29b8fdd83ea2c0d…

MALICIOUS

PDF

2.7 KB Created: 7621-01-01 Authoring application: 4082
MD5: 01bc29a40e8e25bb4994c666e27a98c9 SHA-1: 15bca5f6a4031275016847558200b60199476c68 SHA-256: e29b8fdd83ea2c0dcd38341b162c9adbe5a470c459528c7b23c1f2137472b678
96 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 Command and Scripting Interpreter: PowerShell T1059.003 Command and Scripting Interpreter: Windows Command Shell T1059.007 Command and Scripting Interpreter: JavaScript/TypeScript

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection 'Pdf.Exploit.Agent-36014' strongly suggests a known exploit within the PDF. The extracted JavaScript file, 'javascript_obj0013_001.js', shows signs of obfuscation and hex escape sequences, typical of malicious scripts designed to download and execute further payloads.

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
658deee580f2a23d38f4c8d2d367296cad7c41cdfa7185b92d32a1818288740e
pdf-javascript-stream PDF /JS object 13 at offset 0x328 4795 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).