MALICIOUS
166
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
The PDF file was flagged by multiple heuristics, including a critical ClamAV detection identifying it as Win.Trojan.Agent-36166. Additionally, embedded JavaScript was detected, suggesting the document's primary purpose is to act as a dropper or downloader for further malicious activity. The ML classifier also strongly indicated maliciousness. The specific nature of the JavaScript's execution is not fully detailed due to its potential obfuscation, but its presence alongside the ClamAV detection points to a malicious payload delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
Heuristics 4
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ClamAV: Win.Trojan.Agent-36166 critical CLAMAV_DETECTIONClamAV detected this file as malware: Win.Trojan.Agent-36166
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ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAVClamAV 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.
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JavaScript action low PDF_JAVASCRIPTPDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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Embedded JS stream low PDF_JSPDF 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_obj0007_000.js22fbc323d047a6e9b9604573cd59005fa3567bfc9c1df42aafbd6c499e6f9592 |
pdf-javascript-stream | PDF /JS object 7 at offset 0x1A5 | 84200 bytes |
|
Detection
ClamAV:
Win.Trojan.Agent-36166
Obfuscation or payload:
unlikely
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