PDF malware analysis — malicious · 2280b07e11f14a5a

MALICIOUS

PDF

12.2 KB

MD5: e299ffc23d36b869425ea1c214b10516 SHA-1: 20385ddb969c6e56a7c95dc002ace5f0add608c6 SHA-256: 2280b07e11f14a5a0a49d611dc4a57225d67cdf658c0ce922564586eb52e954a

148 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF contains embedded JavaScript within its metadata, identified by the 'PDF_METADATA_EVAL_STAGER' heuristic. This JavaScript is likely used as a stager to download and execute a secondary payload, as indicated by the 'ML_NYX_PDF_MALICIOUS' and 'ClamAV: Pdf.Exploit.Dropped-94' detections. The 'PDF_JAVASCRIPT' and 'PDF_JS' heuristics further confirm the presence and execution of JavaScript within the PDF structure.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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` `db0b41a5be63ae2329a12de6694e36873654c7d91b0473e44520592c1ba269fa`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2ED0	331 bytes

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