PDF malware analysis — malicious · a09e418fd45f4a57

MALICIOUS

PDF

12.8 KB

MD5: e07a4efc83ef37e3481d9088d113f250 SHA-1: 909ed14dc0a8e66e1128b06adc35f4abfc2e78c0 SHA-256: a09e418fd45f4a57ee014a9e28706cf65bcbd241531fc8f31e40c036fee9ce21

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, flagged by multiple heuristics as malicious and a stager. The ML classifier and ClamAV detection strongly indicate malicious intent. The JavaScript is likely responsible for downloading and executing a second-stage payload, as suggested by the 'Dropped-94' ClamAV signature.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Dropped-94 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-94
PDF metadata JavaScript eval stager high PDF_METADATA_EVAL_STAGER

PDF JavaScript reads document metadata fields such as title, subject, or producer, decodes character data with parseInt/String.fromCharCode style helpers, and evals the recovered stage. This is a high-signal exploit-kit staging pattern.
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0076_000.js` `9ca4f50547be58b84b138171d337aee80bd061e9ff230b7fd92dba81051601f8`	pdf-javascript-stream	PDF /JS object 76 at offset 0x3139	331 bytes

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