PDF malware analysis — malicious · a38a0a67537ee33a

MALICIOUS

PDF

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

MD5: 02edb85f80670c956becb17e10dbc189 SHA-1: 982eadf515f1177cce09a15aa15b8a6a52f26a05 SHA-256: a38a0a67537ee33a36436e355cdfde8f0e7a414e71a53fc410b464339db916c4

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript

The critical ClamAV heuristic firings indicate the file is malicious, specifically identified as 'Win.Trojan.Agent-36166'. The presence of embedded JavaScript, flagged by PDF_JAVASCRIPT and PDF_JS heuristics, suggests the primary attack vector involves executing code. This script is likely responsible for downloading and executing a second-stage payload, 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` `04f6c3e820e36263fdd09c9f5501ef83af34cbf029e6e7a19a673cd632fa1860`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	76093 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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