PDF malware analysis — malicious · df88cab2ce2dce7e

MALICIOUS

PDF

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

MD5: 537c68e71716dec25209dc86766769ec SHA-1: 72ddd05ba6d5a19f58cfda15d68960ca0ba566ea SHA-256: df88cab2ce2dce7e4f49020044aab73ecc8089b19946450d3b8e7caca2279c3f

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file was detected by ClamAV as Win.Trojan.Agent-36166. Static analysis revealed embedded JavaScript, indicating the file's intent is to download and execute a second-stage payload. The JavaScript stream is the primary indicator of malicious behavior, leading to the high confidence in the malicious classification.

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` `bbd496b2be7e75fc873623c62989f91e894680c68559ca7ea83de0cad195e25f`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	83624 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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