PDF malware analysis — malicious · ce8bb0c0e04e2d96

MALICIOUS

PDF

14.6 KB Created: 2009-11-15 19:41:70 Authoring application: PDF Library 4.3.9 (via PDF Library 3.9.7)

MD5: 743c195ab0f94160998a6fb274c48051 SHA-1: 5d269c9de763d29e8ae372102c457b5c26cccec1 SHA-256: ce8bb0c0e04e2d9609548fca14a338b1881db700da02f1244b987f962541bd2d

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The file is a PDF containing embedded JavaScript, which is a common technique for delivering malware. Heuristics indicate the presence of JavaScript actions and embedded JS streams. ClamAV detection confirms this is a known malicious sample, identified as Win.Trojan.Agent-36166. The JavaScript is likely responsible for downloading and executing a second-stage payload, although the exact mechanism is not fully discernible from the provided evidence.

Heuristics 4

ClamAV: Win.Trojan.Agent-36166 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Win.Trojan.Agent-36166
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 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `bc356297532d5c45de37694c4ad905f4bce432817c63dea27730e5ef47b0b9aa`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75899 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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