PDF malware analysis — malicious · eed0911033ba5548

MALICIOUS

PDF

37.7 KB

MD5: c43e50eeb0a4028c2b690476b38ba05f SHA-1: 71378a67abcfb69d313a86620f2563c17f9740f6 SHA-256: eed0911033ba5548f7a0039d852e3bf29c4b78096db20fb4418a2eb743a1fe65

124 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file exhibits multiple high-severity heuristic firings related to embedded JavaScript and Flash content, strongly indicating malicious intent. The ML classifier also flagged this PDF with a very high probability of being malicious. The presence of an embedded JavaScript file suggests it is used to execute malicious code, likely for downloading and executing further stages or exploiting vulnerabilities. The specific JavaScript content was too obfuscated to fully determine its exact actions, but its presence alongside Flash content points to a multi-faceted exploit attempt.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 7

RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
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
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
String.fromCharCode low PDF_FROMCHARCODE

String.fromCharCode found — used to construct payload strings dynamically. Common in benign JavaScript libraries for codepoint manipulation, so this alone is informational; weaponised use is also caught by the dedicated fromCharCode-stage and exploit-shape rules. (matched inside decoded stream)
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`Adobe.swf` `ce5f7936cf8e3536a88a804ce2d6902022df1794fa878bdc64a26866e34ba989`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0xAC7	55839 bytes
`javascript_obj0006_000.js` `79e2203633e370a985138fd06ad5c37efd8354e5087fb1d479670365d18e8bf3`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF5	1570 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

Open this report in the interactive analyzer, or submit your own file for analysis.