PDF malware analysis — malicious · 8f12bbfdf2f1a0f4

MALICIOUS

PDF

31.2 KB

MD5: df1438616427accb0c91de9d3ebdba73 SHA-1: 0c9f122a99b5a24c76da1e897ee8d63b9eb12a93 SHA-256: 8f12bbfdf2f1a0f45e063d46619a7df45afd162605ea068418505ebc0b1e3fa0

96 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file exhibits multiple high-severity heuristic firings indicating malicious intent, including embedded JavaScript and a Flash object. The presence of these embedded artifacts, specifically 'TyPWoIJRMY.swf' and JavaScript streams, suggests an attempt to execute arbitrary code or exploit vulnerabilities within the user's system. The ML classifier strongly supports this assessment.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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 0x11DE	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` `430ba7849711540adf125776b78221b56a2d0cdb71da146d61789afa3aff341a`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF9	3477 bytes
`legacy_pdfkit_stage_000.js` `c8eb386b46e012108513652db0c44b8399a7e39c9686d671671c588779dc99c5`	deobfuscated-js	split-join delimiter stripped JavaScript at offset 0xDA7	2142 bytes

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