PDF malware analysis — malicious · d6e8307ad97cbf0b

MALICIOUS

PDF

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

MD5: 4a395c800a5a7c4298f49ecee469ab4d SHA-1: a9406d4d84f5cc787f8a04e78502e868fb31edd2 SHA-256: d6e8307ad97cbf0bac4b21a978c65dc7f38d1a310fec96b8b0b53785c1cfc437

136 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 JavaScript/JScript T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detections (Pdf.Exploit.Agent-17922 and Win.Trojan.Agent-36166) confirm its malicious nature. The embedded JavaScript is likely responsible for exploiting a PDF reader vulnerability to download and execute a secondary payload, as suggested by the critical ClamAV detections.

Heuristics 4

ClamAV: Pdf.Exploit.Agent-17922 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-17922
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` `fcc4466788572207f7f743d394418f8ebc70bf698b4db4b803d1d6bf0b0b86e2`	pdf-javascript-stream	PDF /JS object 7 at offset 0x1A5	75219 bytes
Detection ClamAV: Win.Trojan.Agent-36166 Obfuscation or payload: unlikely

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