PDF malware analysis — malicious · 41f070b94076d62d

MALICIOUS

PDF

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

MD5: 133c14061adad02520f8d2827b3d6b96 SHA-1: 610bd3cfc1278d955499e54d9581d3e38e989bcf SHA-256: 41f070b94076d62dc4aefbcfa25456b528a4fcfdd317ded7f2b537f47487dcbf

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell

The PDF contains embedded JavaScript, a common technique for delivering malicious payloads. ClamAV detections for 'Win.Trojan.Agent-36166' on both the PDF itself and an extracted artifact strongly suggest this is a known malware dropper. The embedded JavaScript is likely responsible for 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` `0af62a88f6cd4a04af282c4a1dd2e0f60f8e96564feb7d53142133f452397177`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	84172 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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