Malicious PDF — malware analysis report

Static analysis result for SHA-256 be06a738de345713…

MALICIOUS

PDF

15.0 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)
MD5: 75a63eda7fdb72b12da1073b5b50dba9 SHA-1: ad3b5dc455584eff96fed6f99284bf1db7d74dcc SHA-256: be06a738de3457137a18142ff8b79bdb064f0985215895ec62d3eaf57c922520
136 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detections (Win.Trojan.Agent-36166) confirm the malicious nature of the file. The embedded JavaScript is likely responsible for executing the malicious payload, as suggested by the ClamAV detection name.

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
a07e3a5932752a2bbb59e21944860bc9cc8e667f34800810d5c6d5baa8c1c139
pdf-javascript-stream PDF /JS object 7 at offset 0x1A5 84041 bytes
Detection
ClamAV: Win.Trojan.Agent-36166
Obfuscation or payload: unlikely