PDF malware analysis — malicious · 8259676a3ad742f3

MALICIOUS

PDF

3.3 KB

MD5: f7d70aaaac11d828017b4241fafd38b2 SHA-1: d777bf28108405dd0e6408f01580e1dd85dc8416 SHA-256: 8259676a3ad742f38141b781851b0d84253069e08d5b83aa9c015216e8cf0a18

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 decode a string from the document's title and execute it. This JavaScript is likely responsible for exploiting a vulnerability within the PDF reader to achieve arbitrary code execution. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to download and execute a second-stage payload.

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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `fdb8c60c16dae91f403d06045b93c3252b39e8a2b789a00a0f50186d1529aa2f`	pdf-javascript-stream	PDF /JS object 7 at offset 0xA87	347 bytes

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