Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd98ea1bf8541708…

MALICIOUS

PDF

2.7 KB Created: 4004-01-01 Authoring application: 6227
MD5: 2f41453aeeb7cc6d121fb7dedaf6ec43 SHA-1: f6e327266c9d117bf31015ceb8644eef0f478886 SHA-256: cd98ea1bf8541708b21cce6abe899db477dfcc0b6a55169cfdc5f8bc6934f6a5
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 this JavaScript is malicious. The extracted artifact 'javascript_obj0013_001.js' likely contains the malicious script responsible for the exploit. The exact function of the script could not be determined due to obfuscation, but its presence within a PDF and the critical ClamAV detection point to an exploit attempt.

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
e9660881f9c2961634062481c22ee5c884e8e4ebfcd05036991da88d87d33561
pdf-javascript-stream PDF /JS object 13 at offset 0x328 4810 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).