PDF malware analysis — malicious · e7f8357d9eb85db4

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: 93ef3b59073762d557c90baf72f05a1f SHA-1: 983cd04ec4f6ebaf9d2049108e12f6756fc858be SHA-256: e7f8357d9eb85db42a21f1fa3cddaa7ef2bef1bdbd7cdd750c65a5f51b36fa3e

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 likely attempt to download and execute a secondary payload. The presence of JavaScript actions and embedded JS streams strongly suggests this malicious behavior.

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` `941663f66e593089d181c8cdc17bfffc1f4cf61f2c075f5d4bb1a2c291969c54`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74823 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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