PDF malware analysis — malicious · 66b90548f814a192

MALICIOUS

PDF

3.3 KB

MD5: 31be42063a0871f4aa56d12957cbb136 SHA-1: 6621661bdd571c8c70a065135eab627cd03ac769 SHA-256: 66b90548f814a192b0fd9b09a06ef63b01569b53400a333dee2e74af3c9d62a4

106 Risk Score

Malware Insights

MITRE ATT&CK

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Embedded JavaScript was extracted, which appears to be obfuscated but likely attempts to exploit a vulnerability. The script's execution of `this.info.title` suggests it might be leveraging document metadata for its operations, potentially to download and execute a secondary 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` `c1bdff9a90637022e90c7c1daf275d18abc6aec9bce2d3f59e00af5b2330d7f4`	pdf-javascript-stream	PDF /JS object 7 at offset 0xA88	335 bytes

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