PDF malware analysis — malicious · 07c1c14941a13760

MALICIOUS

PDF

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

MD5: 37ad8ada701537c0f3ab032f410c5ba4 SHA-1: 5ceb343fb8a2723ac97f516cd2b334ad3fde3a42 SHA-256: 07c1c14941a13760f53558a8a970da74efa355107ef9b94e7c429092d2c2a819

166 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The PDF file contains embedded JavaScript, indicated by multiple heuristics and the presence of a JavaScript stream. ClamAV detection of 'Win.Trojan.Agent-36166' strongly suggests malicious intent. The JavaScript code, though obfuscated, is designed to execute, likely downloading and running a further stage of malware. The ML classifier also provides a very high confidence score for maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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` `2a6a1351d7be26d96633a7c54f61dd903fdaf6cf91eb3f3387727d9c0ec278db`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	76559 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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