Malicious PDF — malware analysis report

Static analysis result for SHA-256 f67e16a6b6b15015…

MALICIOUS

PDF

2.7 KB Created: 5499-01-01 Authoring application: 9001
MD5: 5b0bbf5efcb8fffb055a62930bba8ad8 SHA-1: 221bb2c94569c6850c7905383c7237e1adefc1da SHA-256: f67e16a6b6b15015cb4480547d6ab888296530f74f7d2c6172ed25fd5a4f2fc5
96 Risk Score

Malware Insights

MITRE ATT&CK
T1059.007 Scripting: JavaScript

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The ClamAV detection 'Pdf.Exploit.Agent-36014' further confirms its malicious nature. The embedded JavaScript, named 'javascript_obj0013_001.js', is likely responsible for executing the exploit. The 'EXTRACTED_FILE_STATIC_TRIAGE' heuristic also flagged this JavaScript for obfuscation, suggesting it's designed to evade detection and perform malicious actions.

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
471c5c921779be5ae693bc34d07024dcab003b3271ae4015cfd07a8e63e2b249
pdf-javascript-stream PDF /JS object 13 at offset 0x328 4809 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).