PDF malware analysis — malicious · d9bb063fb24540a1

MALICIOUS

PDF

12.6 KB

MD5: fff29e390b6f7a14fab6cd2ca2a23216 SHA-1: 84c9333108fef9a2f3acee6817ed901725b8c65a SHA-256: d9bb063fb24540a107b1a2d00a33453e1bc42f51935ef4efa2c5b8474f13942d

136 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript, indicated by multiple heuristic firings related to PDF JavaScript actions and streams. ClamAV detections (Pdf.Exploit.Agent-36365 and Pdf.Exploit.Agent-36364) strongly suggest this is a malicious PDF exploiting a vulnerability. The embedded JavaScript is the likely mechanism for delivering a secondary payload, a common technique for PDF-based malware.

Heuristics 4

ClamAV: Pdf.Exploit.Agent-36365 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36365
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_obj0076_000.js` `d30f41160e8dfbcbea5f8f4cfd39736ccef9927e6ac829b107596c413774fbe9`	pdf-javascript-stream	PDF /JS object 76 at offset 0x369	11762 bytes
Detection ClamAV: Pdf.Exploit.Agent-36364 Obfuscation or payload: unlikely

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