PDF malware analysis — malicious · fc880a4652a2217e

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: 3bf32509675f7e3f3488f47a6f60fdf6 SHA-1: 5092897c5fe6afce18eceff9606cb4396d1371ad SHA-256: fc880a4652a2217ef2b5b00cf515331583e48a44018cf46bd9cfad8c01274b1a

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, a common technique for delivering malicious payloads. Heuristics indicate the presence of JavaScript actions and streams within the PDF. A critical ClamAV detection of 'Win.Trojan.Agent-36166' strongly suggests the execution of a known malicious agent. The large size of the embedded JavaScript object (75176 bytes) further supports the likelihood of complex malicious activity, such as downloading and executing a second-stage 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` `42b27336d6ee5ebfe7ec3492b4fccbf6a0e0fb5a1671bc2b5ef17d6cb2b00426`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75176 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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