PDF malware analysis — malicious · 48b1974461c41723

MALICIOUS

PDF

13.0 KB

MD5: 7e537aa68c04929e428f92081671528c SHA-1: 86ec29bd978f1fc633d60f4d5b292cb5dbea7673 SHA-256: 48b1974461c417231305e3b6a8aa0eb4ffa24e9ef42316b4d5c3962f4cec0cac

116 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious JavaScript

The critical ClamAV heuristic 'Pdf.Exploit.Dropped-94' and the 'PDF_METADATA_EVAL_STAGER' heuristic indicate that this PDF contains JavaScript embedded in its metadata, designed to act as a stager. This stager is likely responsible for downloading and executing a secondary payload. No document body text was available for analysis, but the presence of JavaScript and the ClamAV detection strongly suggest a malicious intent.

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` `4b1103f9d91d0cf738b9c6f29ba6b7b436c5ac3ec60845c5bc05f5548a0bdf28`	pdf-javascript-stream	PDF /JS object 76 at offset 0x31BE	331 bytes

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