PDF malware analysis — malicious · 36d86143bd6d8e8f

MALICIOUS

PDF

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

MD5: 1c63e7fd1c760938e9af2ac61c5bd173 SHA-1: bec2da31dc7b94d0f1c0b27c00312ee39dcaf108 SHA-256: 36d86143bd6d8e8f1d47192ed74ccf8af4f2e51c20e8a0c19f97409e5fbf9096

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detection confirms this is a malicious sample, specifically identified as Win.Trojan.Agent-36166. The embedded JavaScript is likely responsible for executing malicious code or downloading further payloads, contributing to the overall malicious nature of the document.

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` `980f36827c657980af46217522aa49e0a5ab96a3398f7c8149281490e06260a9`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74810 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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