Malicious PDF — malware analysis report

Static analysis result for SHA-256 c148780580b73bf9…

MALICIOUS

PDF

2.7 KB Created: 8509-01-01 Authoring application: 1417
MD5: 6b71d74108af1c1072dfda9fa7d50721 SHA-1: 446ef34f227fc84c606646367de433870ee3b308 SHA-256: c148780580b73bf9e69a88375279167ee8c368a212f3f748e938ef4993dec69b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings including 'PDF_JAVASCRIPT' and 'PDF_JS'. The 'CLAMAV_DETECTION' heuristic identifies the file as 'Pdf.Exploit.Agent-36014', suggesting it exploits a known PDF vulnerability. The embedded JavaScript, although not fully detailed, is flagged for obfuscation and hex escape sequences, pointing towards a malicious payload delivery mechanism. The extracted JavaScript file 'javascript_obj0013_001.js' is likely responsible for the exploit execution.

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
7095a7193852f2e99856650d3e6acef4acf19a19fc34d6235bd6112882c8d87c
pdf-javascript-stream PDF /JS object 13 at offset 0x328 4810 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).