PDF malware analysis — malicious · 5654ecf8caabc296

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: a91772f85cbb6cbe4b358ea89c992c82 SHA-1: 2d3ab89533bb012cb036af246b262ac681f0e299 SHA-256: 5654ecf8caabc296ed1e4f7948f89e4bdd148cb9da541f1fc47cf2de7db9d5eb

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was detected as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, indicating a potential for malicious code execution. The presence of JavaScript actions and embedded JS streams suggests the file attempts to leverage these features for malicious purposes, likely to download and execute further payloads.

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` `a38bf517e523dec38a916bd92360313b0589706841e62eedea13a0eb0dc1de2d`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74340 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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