PDF malware analysis — malicious · d7aca0e9af998cf8

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: 9f10d8d41fb24570385c31c4de4455a6 SHA-1: 8caadfcf38fc9f8f77e0bf7f49cd72e25178ab94 SHA-256: d7aca0e9af998cf8e50742b52d5d630e6626523fdb01fcd8379cced7378c9805

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, evidenced by the 'PDF_JAVASCRIPT' and 'PDF_JS' heuristic firings. The critical ClamAV detection of 'Win.Trojan.Agent-36166' strongly suggests malicious intent. The embedded JavaScript likely serves to download and execute a second-stage payload. The document body is unreadable, but the combination of JavaScript and a critical malware signature points to a common PDF-based malware delivery technique.

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` `b197157ef94e5dfd03685282b8644f2488d44c6a6748af3892c13639176f8553`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	74704 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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