PDF malware analysis — malicious · b1a0967cb17f20f4

MALICIOUS

PDF

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

MD5: 3c58818e3f3ed5644b8c3598a4c3a7cb SHA-1: 36f9de7f6dc8eb718ba9ad9e8c12cf8b2daa4e76 SHA-256: b1a0967cb17f20f4b5a3e9f4ac0da9f8ea1f6a72e165e7f4cf61b14cd79ecb12

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was detected as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, indicating an attempt to execute malicious code. The JavaScript stream is large and potentially obfuscated, suggesting it may download and execute a second-stage payload. The presence of JavaScript actions and embedded JS streams points towards an exploit or downloader pattern.

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` `792f84b93688a0734c794bed19aa47e463f8747790b476f90731ba1d3e418455`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74693 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

Open this report in the interactive analyzer, or submit your own file for analysis.