PDF malware analysis — malicious · 116df1a0e740f4b8

MALICIOUS

PDF

45.0 KB

MD5: 09996597c29297656ec0c2a6d685e27f SHA-1: 89fe53481c49aa96dd16f4e54a69808b97bb362a SHA-256: 116df1a0e740f4b8c6fa0064194e2d1d327f66cb1cd81dad1b25dafe3c231c73

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious intent. Embedded JavaScript streams were detected and appear to be obfuscated, but their presence strongly suggests an attempt to execute arbitrary code. The primary function of the script is likely to download and execute a secondary payload, a common technique for PDF-based malware.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36128 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36128
ClamAV detection on extracted artifact critical EXTRACTED_FILE_CLAMAV

ClamAV flagged at least one file extracted from inside this sample. Even when the wrapping document carries no AV detection of its own, a hit on the carved artifact is a strong indicator the sample is a delivery vehicle.
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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `1a264e2fa3fe103347bc0c7d767dcdcb041c66beae6d5d4a055b578cc694d484`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	45305 bytes
`javascript_obj0008_001.js` `24248a45b39b6f186b4938823d09a7853e4740d7859a4c6b475f36311a56ee65`	pdf-javascript-stream	PDF /JS object 8 at offset 0x20A	45555 bytes
Detection ClamAV: Pdf.Exploit.Agent-36128 Obfuscation or payload: unlikely
`legacy_pdfkit_stage_000.js` `302bad88b7a351b40dc1dcf705338453afb848d048a57ef00de20a9830f8993e`	deobfuscated-js	double percent-decoded annotation JavaScript at offset 0x1E7	33047 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.