PDF malware analysis — malicious · 75d75be0fb5c8679

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: 57231e5bb7d5af5332f9a97da5e59c5b SHA-1: 1821d13d14545f811f2beae2dfa18298ad632cfb SHA-256: 75d75be0fb5c8679181ccf3fae75d67e631a6ca233bab959b3c5968ee224eae7

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detections (Pdf.Dropper.Agent-7273742-0 and Win.Trojan.Agent-36166) confirm its malicious nature. The JavaScript is likely responsible for downloading and executing a secondary payload, a common technique for dropper malware. The extracted file name 'javascript_obj0007_000.js' further supports this. The document body is unreadable, but the heuristics and detections strongly suggest a dropper functionality.

Heuristics 4

ClamAV: Pdf.Dropper.Agent-7273742-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Dropper.Agent-7273742-0
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` `63ed48fbc73255b16d6f644ba8d34fdccc58f34dc2a1cab622b3ef23202ea24a`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75100 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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