PDF malware analysis — malicious · 844e551546eb03ae

MALICIOUS

PDF

3.3 KB

MD5: d42563fe463821c857554a65f427f75a SHA-1: 7cffce85d3a37e575873ce51ad00d0dc6366cae1 SHA-256: 844e551546eb03aed8665468f351ab5ae8d1821383696acdd11137b1309a14b5

106 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains embedded JavaScript that is obfuscated but appears to be designed to download and execute a secondary payload. Heuristics and ClamAV detection confirm the malicious nature of the PDF, specifically identifying it as an exploit targeting PDF vulnerabilities. The JavaScript attempts to decode and execute content, likely a downloader.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

Heuristics 3

ClamAV: Pdf.Exploit.Agent-36121 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36121
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `af908280b8833ba850b6534a9fac95b6e1187c78383014337598d019925dda03`	pdf-javascript-stream	PDF /JS object 7 at offset 0xA88	333 bytes
`stream_000_off00000152.bin` `d497e30ba33001b00973060b66c59592c938c554544c63b94a13f290f1441fde`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x152	13100 bytes

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