MALICIOUS
114
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1203 Exploitation for Client Execution
T1566.001 Spearphishing Attachment
The PDF file contains embedded JavaScript that is obfuscated but appears to construct a string and then execute it using `eval()`. This JavaScript is likely responsible for downloading and executing a secondary payload, as indicated by the ML classifier and ClamAV detection. The specific payload or download URL is not directly visible due to obfuscation, but the technique of using embedded JavaScript to trigger further malicious activity is clear.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
Heuristics 4
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ClamAV: Pdf.Exploit.Agent-22601 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Exploit.Agent-22601
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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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Optional Content Group with action trigger low PDF_OPTIONAL_CONTENTOptional Content Group (layer) co-occurs with an action trigger — content can be selectively hidden from viewers or scanners while the action still fires on open
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
javascript_obj0010_000.jsc2c43ec999d3027fd0cea72b0db32ea901610cc91e601615bb27f9f575ae582f |
pdf-javascript-stream | PDF /JS object 10 at offset 0x8CD7 | 1346 bytes |
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