PDF malware analysis — malicious · dc11a24e1628f3ba

MALICIOUS

PDF

31.5 KB

MD5: 93af59441d3412be11ee5943786b3ea1 SHA-1: f322fa3ac5f18940c5591f5cc544a01321115cbb SHA-256: dc11a24e1628f3ba2fb8c947797b0348c5e8617cadc4f2f2cd27c8cfa78a5b5e

66 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1559.002 Component Object Model Hijacking

The PDF file contains embedded JavaScript and a Flash (SWF) file, indicated by the PDF_JAVASCRIPT, PDF_JS, and PDF_RICHMEDIA heuristics. The embedded SWF file, named TyPWoIJRMY.swf, is a strong indicator of malicious intent, as Flash content is often used to deliver exploits. The JavaScript stream, when deobfuscated, likely facilitates the execution of the embedded SWF or a further payload. The exact functionality of the script is difficult to ascertain due to obfuscation, but its presence alongside the SWF strongly suggests an exploit delivery mechanism.

Heuristics 5

RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
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.
Embedded file low PDF_EMBEDDED

PDF embeds a file attachment — could carry an executable or another weaponised document as a nested payload
Suspicious extracted artifact info EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`TyPWoIJRMY.swf` `767382813fc770c9716554c3266b22eee1636037ca964af05acf6ff66db4a27d`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0x12DD	26993 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.98, consistent with packed or encrypted content.
`javascript_obj0006_000.js` `0fdfe8c21e5550ed777eb3b9ca616a10756a720b16dedd6094bced9e3ba62620`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF9	3732 bytes
`legacy_pdfkit_stage_000.js` `dc24b5a8ec398431c64c13799ec3015f883104b8dcef58b4d50e28ce7a1a7c43`	deobfuscated-js	split-join delimiter stripped JavaScript at offset 0xDA7	2373 bytes

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