PDF malware analysis — malicious · 4953a5f22745761c

MALICIOUS

PDF

12.8 KB

MD5: 7f8f61a476e515fbebdb8cb2910c9abf SHA-1: c3c5becdb553ae33ace24974745814daa741004c SHA-256: 4953a5f22745761c943d8cc46cc925052211082b394fd52dc7448d1937beb87e

116 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, identified by the 'PDF_JAVASCRIPT' and 'PDF_JS' heuristics. The 'PDF_METADATA_EVAL_STAGER' heuristic indicates that this JavaScript is used to decode and execute an exploit, likely from the PDF's metadata. ClamAV detection 'Pdf.Exploit.Dropped-94' further confirms its malicious nature. The primary function appears to be staging an exploit to download further malicious content.

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` `fba3453a14380cc9b3efb834997f17b5e5402ec95bd104cff94d91a3b7354932`	pdf-javascript-stream	PDF /JS object 76 at offset 0x3103	331 bytes

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