Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8fd7a641a6f4f69…

MALICIOUS

PDF

14.4 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)
MD5: 9aa60e057ada49d9bcb399e65026ff19 SHA-1: 158edc9b257b1a8b35fd8f41e305e3032ee2564c SHA-256: d8fd7a641a6f4f69ce83b867097d4b9718862e5bc252ff078f78e7a25b373326
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 malicious code, potentially downloading further payloads or exploiting vulnerabilities within the PDF reader.

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
2b72bc8e2efa6add3e87aabaa3035154de2cd61a25f2eecb7f1be358d1bad0af
pdf-javascript-stream PDF /JS object 7 at offset 0x1A5 75150 bytes
Detection
ClamAV: Win.Trojan.Agent-36166
Obfuscation or payload: unlikely