Malicious PDF — malware analysis report

Static analysis result for SHA-256 c777f5c91b5b00ec…

MALICIOUS

PDF

14.3 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)
MD5: c20da016a16897349f2722251ed6e52a SHA-1: 672105e8fe78262b6760dbd6a45703642694d92f SHA-256: c777f5c91b5b00ec5c789587f0bb241754ad6838f2fd1309dea89bab1ec9b412
136 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, indicating an attempt to exploit vulnerabilities within the PDF reader. The presence of JavaScript actions and embedded JS streams strongly suggests the execution of malicious code. The exact payload or exploit mechanism is not fully discernible due to obfuscation, but the overall intent is to deliver a malicious payload.

Heuristics 4

  • ClamAV: Win.Trojan.Agent-36166 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Agent-36166
  • ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV
    ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
  • 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_obj0007_000.js
79598477fa8dd27c8dd1fcb85fb6ab6e776a59195dffb457d9e2fa02e4b136c8		 pdf-javascript-stream PDF /JS object 7 at offset 0x1A5 74327 bytes
Detection
ClamAV: Win.Trojan.Agent-36166
Obfuscation or payload: unlikely

Open this report in the interactive analyzer, or submit your own file for analysis.