Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af7fc22e9ac17a6…

MALICIOUS

PDF

5.8 KB
MD5: cdfa3061980973bda797380d94117405 SHA-1: b41a1104cd5d9d3e602df1805e1b72694b45e043 SHA-256: 4af7fc22e9ac17a62d1e97974069b5c71f32ee8cae727bb026f7e1f3a1f75c76
166 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Exploit.Agent-35646'. Embedded JavaScript streams were also identified, indicating the likely execution of malicious code. The ML classifier strongly supports the malicious verdict, suggesting this PDF is designed to exploit vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • ClamAV: Pdf.Exploit.Agent-35646 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Exploit.Agent-35646
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
javascript_obj0004_000.js
6839239245137aaf74b9cc498f521ba15730e8fa3b5116f7ffc774a7d2229cf9		 pdf-javascript-stream PDF /JS object 4 at offset 0x891 14600 bytes
Detection
ClamAV: Pdf.Exploit.Agent-35646
Obfuscation or payload: unlikely

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