PDF malware analysis — malicious · b91ed6e06d75d719

MALICIOUS

PDF

12.4 KB

MD5: 98f16ed698eb441d1321513c0526e634 SHA-1: b0afbafffb0913930d83d07765c60af8052c3ab0 SHA-256: b91ed6e06d75d71974c48c7bcc253a8db2f927a391d76cc5e0d35272c8df2015

106 Risk Score

Malware Insights

MITRE ATT&CK

T1204 Malicious Link T1059.001 PowerShell

The PDF was flagged by a machine learning classifier with high confidence and also detected by ClamAV as Pdf.Exploit.Pdfka-9, indicating it contains an exploit. Embedded JavaScript actions and streams suggest the PDF is designed to execute malicious code, likely to download and run a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.

Filename	Kind	Source	Size
`javascript_obj0076_000.js` `20cc0b25b12bc4dc7e35da40c7fddffb3a9b3f2c8bd6b35b8584cc353d9423d3`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11565 bytes
Detection ClamAV: Pdf.Exploit.Pdfka-9 Obfuscation or payload: unlikely

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