PDF malware analysis — malicious · fba46bd0db471746

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: a267e2a68ecf81032f377b4a0f6b7bb7 SHA-1: 4f73abc6bb5a9fe0c2765d913fb2b4869019f786 SHA-256: fba46bd0db47174618ae1502511bb8de2b064d6410c3ae802767b3cdc282f521

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was detected as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, indicating an attempt to execute arbitrary code. The JavaScript action and embedded JS stream heuristics confirm the presence of potentially harmful script content within the PDF. The primary attack pattern involves leveraging JavaScript to deliver a malicious 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` `d59f8922615ec9db14dc5db7b81a2731f4c22d483da0074da881bd2b701a7c35`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74969 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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