PDF malware analysis — malicious · e241c1069bf40414

MALICIOUS

PDF

45.0 KB

MD5: 4d995f6aec097b52648900aa4950a997 SHA-1: c1fba7cb2a348239e43050fef8e283160bda957d SHA-256: e241c1069bf4041438ea6f85f7a3a01a4b23c052e369ed1a8fbc5f2f959b30d8

76 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV heuristic indicates the file is malicious, specifically identified as Pdf.Exploit.Agent-36128. The PDF structure contains embedded JavaScript, which is a common technique for exploiting vulnerabilities and delivering further malicious content. The presence of JavaScript actions and embedded JS streams strongly suggests an attempt to execute code upon opening the PDF. The exact functionality of the JavaScript is not fully discernible due to potential obfuscation, but its presence is a key indicator of malicious intent.

Heuristics 3

ClamAV: Pdf.Exploit.Agent-36128 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Agent-36128
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0008_000.js` `4d1a94996a827c064f0fc62aec820c47d64c54d15a7f1d33fd689b8d9bfa0982`	pdf-javascript-stream	PDF /JS object 8 at offset 0x1E7	45305 bytes
`legacy_pdfkit_stage_000.js` `fd59417135a519e5e60d5899f4f25d0fc0a203000e35d4a47fb53b4182b8d26e`	deobfuscated-js	double percent-decoded annotation JavaScript at offset 0x1E7	33047 bytes

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