PDF malware analysis — malicious · 368366fed735edca

MALICIOUS

PDF

12.3 KB

MD5: 53c56ea069a21c1846e3dca844afe9ce SHA-1: 0760d68156a0da5e20853e98ccc1443dd37c16a9 SHA-256: 368366fed735edca9c044f4fe15a5c7d7b8df68ec3c9b64dd269768d2cca594c

116 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious JavaScript

The critical ClamAV detection and high heuristic for PDF metadata JavaScript eval stager indicate this PDF is designed to exploit vulnerabilities. The embedded JavaScript stream, identified by PDF_JAVASCRIPT and PDF_JS heuristics, is likely responsible for executing the exploit and downloading a secondary payload, as suggested by the 'Dropped' component in the ClamAV detection name. No specific family could be identified.

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` `02ac7ebc88ffa9dda0982770b37e52e0d9c9aaf68b1d6e84e74d54d20cb94d3f`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2F46	331 bytes

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