PDF malware analysis — malicious · ba884e17401f9d72

MALICIOUS

PDF

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

MD5: 9014241bd3dd4262366632982f2d71db SHA-1: 1856ac716671243991ecd5d27c162938b3b2af67 SHA-256: ba884e17401f9d72d55f67a15184a6b0097f2dfa1227cdf9477b52e1116154b7

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The file is identified as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, indicating an attempt to execute malicious code. The presence of PDF_JAVASCRIPT and PDF_JS heuristics further supports this. The 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` `086604700ff8f1e0a1f8c6a15cfb060ac7c496e35e893d004797a988dc0656b1`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75196 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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