PDF malware analysis — malicious · 334d4a151fcc730b

MALICIOUS

PDF

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

MD5: 7020f78d9090901fdb1b435696d98697 SHA-1: 1d700e9240b294eb433d894dd483d9550b1d0b00 SHA-256: 334d4a151fcc730b349f0f94c66ad51e3b57555ba139f95b0e9f0daefd5a7ef7

138 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was flagged by ClamAV as Win.Trojan.Agent-36166, indicating a known malicious signature. Heuristics identified embedded JavaScript, suggesting the file's primary function is to execute malicious code. The JavaScript stream is likely responsible for downloading and executing a second-stage payload, a common technique for malware delivery. The differential parser failure indicates potential obfuscation or structural anomalies.

Heuristics 5

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.
PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED

The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PSEOF. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0007_000.js` `ecc0608d589d685a380690fc957e85c636f1cc3e8633bc32a96ac4ebdb718779`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74788 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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