Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e145d12accf4a07…

MALICIOUS

PDF

11.7 KB
MD5: f9c264c07fcbabd41edba66d28ad8f51 SHA-1: a0b569e8ec10b2acc8f167b3ca35bce86d8dbd7e SHA-256: 4e145d12accf4a0720555088cdb6156ac24e6a13c48b9f7db55cccdced1ada11
106 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.Dropper.Agent-7212393-0' and a high ML score indicating maliciousness. Embedded JavaScript streams were detected, suggesting the file's primary function is to execute malicious code. The ML classifier's high confidence score supports this assessment. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • ClamAV: Pdf.Dropper.Agent-7212393-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-7212393-0
  • 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_obj0045_000.js
ab86a1bfcc7af481b690342f89d3523403f85715268c31fb093711175fd5a102		 pdf-javascript-stream PDF /JS object 45 at offset 0x193 28036 bytes

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