MALICIOUS
168
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1204.002 Malicious File
The file is a PDF document flagged by ClamAV as Pdf.Exploit.Agent-35540. Static analysis detected embedded JavaScript, indicating an attempt to exploit a vulnerability within the PDF reader. The ML classifier also strongly suggests malicious intent. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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ClamAV: Pdf.Exploit.Agent-35540 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Exploit.Agent-35540
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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.
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Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGEOne or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
javascript_obj0007_000.js14744b76b59542cae5d57467c3a9219441000bd13ae6b433b42198e9ddd02e9d |
pdf-javascript-stream | PDF /JS object 7 at offset 0x402 | 8825 bytes |
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Detection
ClamAV:
Pdf.Exploit.Agent-35540
Obfuscation or payload:
likely
Carved artifact contains 1 eval/decoder/string-building token(s).
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