PDF malware analysis — malicious · b5efee631ff4dcf5

MALICIOUS

PDF

6.6 KB Authoring application: Tisilarehaue (via 4c557Tibedegabala)

MD5: c8ec9bd781d1957c1b3506e65c4081c5 SHA-1: 4602fe222a1532fb0d98e4cbf67c5efc7f7e4639 SHA-256: b5efee631ff4dcf5790605cf677e0ee23762c8d8ebc41814f18b66e25ec329b1

76 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The file is a PDF containing embedded JavaScript, as indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. ClamAV detected this as Pdf.Exploit.Agent-36142, suggesting it exploits a known PDF vulnerability. The embedded JavaScript is likely responsible for the malicious behavior, potentially downloading and executing a second-stage payload. However, the script content was truncated, preventing a more detailed analysis of its specific actions.

Heuristics 3

ClamAV: Pdf.Exploit.Agent-36142 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36142
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_obj0010_000.js` `d4dce4f95f7146e3b127d68edf45ceb045483a205d9e9a2a53d6e6b80d83b663`	pdf-javascript-stream	PDF /JS object 10 at offset 0x1230	1728 bytes

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