Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb4d84be97cde5ed…

MALICIOUS

PDF

2.7 KB Created: 6000-01-01 Authoring application: 1708
MD5: 34d9eae53a308c76bd0cd9c947eb2b7f SHA-1: a30915157f8b07681c3ee5b9c7b1cc9bc7539d4e SHA-256: bb4d84be97cde5edd538f79f3b51d25bba8fa73c12f383a1a72f99e23ac17913
96 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detection as 'Pdf.Exploit.Agent-36014' confirms its malicious nature. The extracted JavaScript file, 'javascript_obj0013_001.js', shows signs of obfuscation, suggesting it's designed to perform malicious actions such as downloading and executing a second-stage payload. The exact payload and execution method are not fully discernible due to obfuscation.

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
ca6ff1478fbcefacc808cda82545f87be2c5e5faa602d04d9e46b078824f4687
pdf-javascript-stream PDF /JS object 13 at offset 0x328 4775 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).