Malicious PDF — malware analysis report

Static analysis result for SHA-256 c801cf1fb8fc2631…

MALICIOUS

PDF

2.7 KB Created: 9516-01-01 Authoring application: 5988
MD5: 35c20ef77f3f61d9f08f2f1da317863e SHA-1: a92764b39ec96131c083aae6aced636da226fba2 SHA-256: c801cf1fb8fc2631b50561245503073146c721b21b53ceeace8aa9514c984a0e
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. ClamAV detection as 'Pdf.Exploit.Agent-36014' strongly suggests exploitation of a known vulnerability. The extracted JavaScript file, 'javascript_obj0013_001.js', is obfuscated, preventing a detailed analysis of its specific actions, but its presence within a malicious PDF points to a likely payload delivery mechanism.

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
6eaea4b90eb5dcaee9384e2546023ea4783f9711caa74b4a15ac48013ceba095
pdf-javascript-stream PDF /JS object 13 at offset 0x328 4813 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).