PDF malware analysis — malicious · 6ea1594fada5971c

MALICIOUS

PDF

14.4 KB

MD5: 2b7fa88f80397f6e662ca803e2938eda SHA-1: d7a86af3bb73798243680d082bf1f634cdc40c70 SHA-256: 6ea1594fada5971c38bc219591c23c858f1bb3502080e8ec81f926132880ab23

168 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, which identified it as Pdf.Exploit.Agent-35550. Embedded JavaScript streams were extracted, with one stream containing obfuscated code that likely downloads and executes a second-stage payload. The presence of JavaScript and exploit detection suggests an attempt to compromise the user's system via a malicious attachment.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 5

ClamAV: Pdf.Exploit.Agent-35550 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-35550
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.
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0001_000.js` `f2c39d777b59779690c8a549c4bae2778eddbf4a598014024a7b9d2929198224`	pdf-javascript-stream	PDF /JS object 1 at offset 0xF	44 bytes
`javascript_obj0013_001.js` `78e74b93f2eb25967bccff2eaf26fd55b60755329fd0952423a94dfc81815309`	pdf-javascript-stream	PDF /JS object 13 at offset 0x39E	35552 bytes
Detection ClamAV: Pdf.Exploit.Agent-35550 Obfuscation or payload: likely Carved artifact contains 11 long base64-like blob(s).

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