Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b46908fdf79441f…

MALICIOUS

PDF

2.7 KB Created: 7781-01-01 Authoring application: 4306
MD5: 473ff144624cadaa54f354f39ca693a3 SHA-1: 865d51c149dfcea99efd32449122ae30241297cd SHA-256: 9b46908fdf79441f3e71e91094b406e008c07ea8024931bebfba8358a6ea6a02
96 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The 'EXTRACTED_FILE_STATIC_TRIAGE' heuristic flags suspicious obfuscation techniques within the extracted JavaScript file 'javascript_obj0013_001.js'. ClamAV also detected this file as 'Pdf.Exploit.Agent-36014'. The presence and obfuscation of JavaScript strongly suggest an attempt to execute malicious code, likely to exploit a PDF vulnerability or download a secondary payload.

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
4c04b3ce09f5c93f0fba2219413ffde6d8c63707a8cc561eac55087ec80c3edc
pdf-javascript-stream PDF /JS object 13 at offset 0x328 4811 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).