MALICIOUS
148
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 Command and Scripting Interpreter: PowerShell
T1204.002 User Execution: Malicious File
The PDF file was flagged as malicious by a machine learning classifier and ClamAV, which identified it as Pdf.Dropper.Agent-7166224-0. Static analysis revealed embedded JavaScript, including an unescape() call, indicating obfuscation. This JavaScript is likely responsible for downloading and executing a second-stage payload, a common technique for dropper malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
Heuristics 5
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ClamAV: Pdf.Dropper.Agent-7166224-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Dropper.Agent-7166224-0
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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_obj0001_000.js2ee2a8012721797d7e3c4891552075609e85715487e87b6e76efdf1ed40286ce |
pdf-javascript-stream | PDF /JS object 1 at offset 0x10 | 1953 bytes |
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Detection
ClamAV:
No threats found
Obfuscation or payload:
likely
Carved artifact contains 3 eval/decoder/string-building token(s).
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