PDF malware analysis — malicious · ae574d864773b0db

MALICIOUS

PDF

7.7 KB Created: 2009-11-26 19:49:67 Authoring application: PDF Library 8.10.8 (via PDF Library 4.3.6)

MD5: 0423af5f4fa956e244924113301e7f2a SHA-1: 9f8d6d8f4d529069f6baa5918bcc3ad7d1fb0cc5 SHA-256: ae574d864773b0db7d0c6d58600e9e2277bdff09ee7443878eac3eb22065fd4f

86 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF contains embedded JavaScript, indicated by the PDF_JAVASCRIPT and PDF_JS heuristics. The ML classifier also flagged this PDF as malicious with a high confidence score. The extracted artifact 'javascript_obj0007_000.js' suggests the JavaScript is likely responsible for executing a malicious payload. The PDF_FILTER_HEX heuristic indicates potential obfuscation techniques used to hide the malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ASCIIHexDecode filter (with exploit indicators) medium PDF_FILTER_HEX

Hex-encoding filter present alongside exploit delivery indicators — often used to hide payload or shellcode bytes
Suspicious extracted artifact medium 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.
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_obj0007_000.js` `bc8242b0ee86b865418f9fa4d52f25e656b8c3dfe3f6f27a0bc2b8fa545b74bf`	pdf-javascript-stream	PDF /JS object 7 at offset 0x268	37665 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 1 long hex-escaped blob(s).

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