Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b3e449415f38e66…

MALICIOUS

PDF

2.7 KB Created: 4314-01-01 Authoring application: 130
MD5: 9d355039e807162ad1f88db826539bd0 SHA-1: be697b067310ef55a7aef8da8ef2b8bb679ec112 SHA-256: 7b3e449415f38e66ea69d0f21729a8ebe195b89108e8fc44e5efb7b2c21c9ca2
96 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious 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 file 'javascript_obj0013_001.js' is suspicious due to obfuscation indicators. This script is likely responsible for downloading and executing a second-stage payload, which is a common attack pattern for PDF-based malware.

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
1e313971b678126f9ccbbb985e03d02e98bd2afad82eb379299e67c8fa2c0404
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).