MALICIOUS
114
Risk Score
Malware Insights
MITRE ATT&CK
T1059.007 JavaScript
T1203 Exploitation for Client Execution
T1566.001 Spearphishing Attachment
The file is identified as malicious by multiple heuristics and a machine learning classifier, with ClamAV detecting it as Pdf.Exploit.Agent-22449. The embedded JavaScript, obfuscated but partially reconstructible, uses a setTimeout function to execute a string derived from annotations within the PDF. This string, when decoded, likely forms a command to download and execute a secondary payload, indicating a typical exploit delivery mechanism.
Machine Learning
- Nyx PDF Classifier malicious score 0.9999
Heuristics 4
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ClamAV: Pdf.Exploit.Agent-22449 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Exploit.Agent-22449
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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.jsca064ac1b1e0841df69652f2fb80fb2b01cf73d0b8e2ec4f7dfddf71cb0813af |
pdf-javascript-stream | PDF /JS object 10 at offset 0x8D14 | 1346 bytes |
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