PDF malware analysis — malicious · e7bce276393c3022

MALICIOUS

PDF

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

MD5: 1f0a3f4b01032760feab532699cba70b SHA-1: 1474f9e3bb0525872a23bf6dd02084dd9a853e23 SHA-256: e7bce276393c30221342b897bd77246cd16b6cdb7bc09ec5a5e24970cfcfc91f

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript

The critical ClamAV heuristic indicates the file is detected as Win.Trojan.Agent-36166. Additionally, PDF-specific heuristics fired for JavaScript actions and embedded JS streams, suggesting the file attempts to leverage JavaScript for malicious execution. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload.

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` `f39488b1ab8fdd0244e3d7dd5c0046dab25de7d90420d4a25ce19a7bbf2dfa58`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74762 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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