PDF malware analysis — malicious · 48b22cd4ccba12e9

MALICIOUS

PDF

12.2 KB

MD5: 807d27eaa7e25030ffc1cd82a18fbd33 SHA-1: 1eb841c40119800fc1190a23d03d4e1563a97748 SHA-256: 48b22cd4ccba12e9e7338065d717f3f14dde5a0a3fceece28141cf5d6d4602c3

116 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious JavaScript

The critical ClamAV heuristic 'Pdf.Exploit.Dropped-94' and the 'PDF_METADATA_EVAL_STAGER' heuristic indicate this PDF is designed to exploit vulnerabilities. The embedded JavaScript stream, identified by 'PDF_JAVASCRIPT' and 'PDF_JS', is likely responsible for executing the exploit. The primary function appears to be downloading and executing a secondary payload, as suggested by the 'Dropped' designation in the ClamAV detection name.

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` `613b5f9b70faf688dcb993913a390d5b277c9ced88637ff5166b0876bb40d3f6`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2ECC	331 bytes

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