PDF malware analysis — malicious · 3ca7444943f9566f

MALICIOUS

PDF

13.1 KB

MD5: 66eb6cd5f1d059f43a75fde0a60dcedd SHA-1: e598a534a312b472c371217440092222aee0cafa SHA-256: 3ca7444943f9566fd08a55f30a8724a5670700ce49f85330b74dd37071d4b092

116 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, identified by multiple heuristics including 'PDF_JAVASCRIPT' and 'PDF_JS'. A critical heuristic, 'PDF_METADATA_EVAL_STAGER', indicates that JavaScript within the PDF's metadata is used to decode and execute an exploit. ClamAV detection 'Pdf.Exploit.Dropped-94' further confirms its malicious nature. The primary attack pattern involves leveraging JavaScript within the PDF structure to trigger an exploit, likely for dropping additional malware.

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` `0d5555fb2864ad7bab5699ad6a4625e839ce94a50ea7839d91d2c2f2601d1f29`	pdf-javascript-stream	PDF /JS object 76 at offset 0x322C	331 bytes

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