PDF malware analysis — malicious · b34e9fd202c3f59d

MALICIOUS

PDF

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

MD5: b19241e7480ba10629f4e3ead553e59b SHA-1: cca24420c95690d23e51077188cb805babe475ff SHA-256: b34e9fd202c3f59dac3ada88b9ab25b25f3b13ee427399f694980b7d9b889d16

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detections (Win.Trojan.Agent-36166) confirm its malicious nature. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, as suggested by the critical ClamAV detection on an extracted artifact. The exact functionality of the JavaScript is not fully discernible due to its size and potential obfuscation, but its presence is a strong indicator of malicious intent.

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` `c49d36f8fc32b89b6a875d1cc8a2972f8035215cefb9cc3cc8f81dd7cb304630`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	83646 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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