MALICIOUS
148
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
The PDF contains embedded JavaScript with multiple obfuscation layers, including the use of eval() and string concatenation. Heuristics indicate a high likelihood of malicious JavaScript execution. The ClamAV detection of 'Pdf.Exploit.Agent-36118' strongly suggests this is a known exploit. The script's intent is to download and execute a second-stage payload, as indicated by the eval() calls and the ML classifier's output.
Machine Learning
- Nyx PDF Classifier malicious score 1.0000
Heuristics 5
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ClamAV: Pdf.Exploit.Agent-36118 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Exploit.Agent-36118
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eval() call high PDF_EVALeval() found — commonly used for obfuscated exploit execution
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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_obj0013_000.js466320c78b37e07c9bd3519ecb9f6153e1ecd7ef1bcbb5799045d2242732e98d |
pdf-javascript-stream | PDF /JS object 13 at offset 0x336 | 13582 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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