PDF malware analysis — malicious · d91fb48b4ff7e621

MALICIOUS

PDF

37.7 KB Created: 2010-04-15 07:38:55 +04:00 Authoring application: TCPDF (via TCPDF 4.8.032 (http://www.tcpdf.org))

MD5: 0065d1721aa493e25a22e75b0f8bb31d SHA-1: 31a8a8fd2ee596f3776cd2ff36252fe7aa9ab13e SHA-256: d91fb48b4ff7e621cc31738ffa01284b513d892f19d9d008c006e04c753b2834

84 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ClamAV detection 'Pdf.Exploit.Agent-22221' strongly suggests this JavaScript is malicious and exploits a known PDF vulnerability. The embedded JavaScript is likely responsible for downloading and executing a second-stage payload, though the exact functionality cannot be determined due to obfuscation.

Heuristics 4

ClamAV: Pdf.Exploit.Agent-22221 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-22221
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.
Optional Content Group with action trigger low PDF_OPTIONAL_CONTENT

Optional Content Group (layer) co-occurs with an action trigger — content can be selectively hidden from viewers or scanners while the action still fires on open

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0010_000.js` `761e213e3e18fac1313db3ef416dde3fe6d1ea782602ac7ec0a71f8cca8c2fb8`	pdf-javascript-stream	PDF /JS object 10 at offset 0x8C7B	1344 bytes

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