PDF malware analysis — malicious · 8ee8142d4f4cac82

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: 293d62f373c4fbe2f87e323d8da8fedb SHA-1: bb5eb53bf5b5449b7fcada572d6cb5fe39773eb1 SHA-256: 8ee8142d4f4cac8231961f3cd7ca2c37403698d317ab158d28f087a42a8994f4

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV heuristic firings for 'Win.Trojan.Agent-36166' strongly suggest a known malicious trojan. The presence of PDF JavaScript actions and embedded JS streams indicates that the PDF is designed to execute malicious code, likely for downloading and running a second-stage payload. The document body was unreadable, but the technical indicators are sufficient for a high-confidence assessment.

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` `2df28897bc58dfb8d467f5c514c1b09f490ecd7ff6d9abf3917b0e6bc130a817`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74388 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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