PDF malware analysis — malicious · 7ac1b7fa5d51317c

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: c096dfbad5639af0ae1f4791c6de2b0b SHA-1: 4bef133279b064ca8b136d53407f968b1840a157 SHA-256: 7ac1b7fa5d51317ce4bb5de3c27eb49a948251acc5beabd04db7ad9971d4fe93

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF file was detected as malicious by ClamAV with the signature Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, indicating a potential for malicious actions such as exploiting vulnerabilities or downloading further payloads. The document body was unreadable, so the rationale is based on the heuristic findings and the ClamAV detection.

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` `556b7c92401f51d822858ac09926623d190688451623022b9f4369291c1901eb`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74572 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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