PDF malware analysis — malicious · bfd26350e1cddeee

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: 6ad8a10f285809c2b6586c96afea5641 SHA-1: 241bafb68167944b54dfc2f970dc23ea1f3f143e SHA-256: bfd26350e1cddeee331f98b3bfaf40ac775a1bb28b52f5f0b7ef2f695e07dda3

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is identified as a malicious PDF by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis detected embedded JavaScript, indicating an attempt to exploit PDF vulnerabilities. The JavaScript is likely responsible for downloading and executing a second-stage payload, though its exact function is obscured by obfuscation. The document body content is unreadable, providing no further clues to the specific lure.

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` `32105cea8d2666b80746eb2f59c888714599b7bac48725c07ce6c2f1c0ff344b`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74792 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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