Malicious PDF — malware analysis report

Static analysis result for SHA-256 d203d84e1c8d9752…

MALICIOUS

PDF

10.0 KB
MD5: bb81263237da5838e7a51a747602cf9d SHA-1: 09b81159e05eda4fd8fcae10239ba2edecfdce15 SHA-256: d203d84e1c8d97521240cdbd3fe788c6e8028a63cace4e988207898d53e473f8
106 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as Pdf.Dropper.Agent-5343105-0 and a machine learning model with high confidence. Heuristics indicate the presence of embedded JavaScript, which is commonly used in malicious PDFs to download and execute further stages. The large size of the embedded JavaScript stream (27570 bytes) suggests complex malicious functionality.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-5343105-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-5343105-0
  • 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_obj0069_000.js
98a5696871bbfd63adb03e6eeb0c1399ec7b1738d45e54837c14884fb8457ad8		 pdf-javascript-stream PDF /JS object 69 at offset 0x1BE 27570 bytes

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