PDF malware analysis — malicious · 3076602328af8203

MALICIOUS

PDF

37.7 KB

MD5: d941dc3cc2cd4b91644bf0b7825f92ee SHA-1: 50a7d27f4851d1dd4ba69ce799827f5d618bb5aa SHA-256: 3076602328af8203780c2e1ce4a2b16fabbf4854d62fe68646607af7ed312799

124 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1566.001 Spearphishing Attachment

The PDF file exhibits multiple high-severity heuristic firings, including PDF_RICHMEDIA (Flash) and ML_NYX_PDF_MALICIOUS, indicating a high likelihood of malicious intent. An embedded JavaScript file was also extracted. The presence of these elements suggests the PDF is designed to exploit vulnerabilities or deliver a secondary payload, potentially through the embedded Flash or JavaScript. The ML classifier's output of 0.999988 strongly supports a malicious classification.

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 0xACF	55839 bytes
`javascript_obj0006_000.js` `416a343d10697f555bbe64a226539628f7e47c9c40c7f1a87e740afd46835280`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF5	1588 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.