MALICIOUS
148
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
T1204.002 Malicious File
The PDF contains embedded JavaScript, flagged by multiple heuristics, including a high-severity unescape() call. The ML classifier and ClamAV detection strongly indicate maliciousness, identifying it as Pdf.Dropper.Agent. The embedded JavaScript file, 'javascript_obj0006_000.js', is likely responsible for downloading and executing a secondary payload, a common dropper behavior.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
Heuristics 5
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ClamAV: Pdf.Dropper.Agent-5342611-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Dropper.Agent-5342611-0
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unescape() call high PDF_UNESCAPEunescape() found — often used to decode shellcode in PDF JS exploits (matched inside decoded stream)
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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_obj0006_000.js0f8abc6f3dfe2d909a4a310fd4a1f4e5c33e1408b50e7a9f22248e6e29098d19 |
pdf-javascript-stream | PDF /JS object 6 at offset 0x1CA | 1221 bytes |
|
Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 2 eval/decoder/string-building token(s).
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