PDF malware analysis — malicious · 9a63ceba4083a500

MALICIOUS

PDF

54.2 KB

MD5: fa3ca4d48dde4d9926be765782394398 SHA-1: 199cdbbb7d6a130aa605e5626fdd47f8339da844 SHA-256: 9a63ceba4083a500477cb4ae481d7ece5ff01cb637b28b49c197cfe001ef8bce

124 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1559.002 Component Object Model Hijacking T1204.002 Malicious File

This PDF file exhibits multiple indicators of malicious activity, including embedded JavaScript and Flash content. The ML classifier strongly suggests maliciousness. The presence of an embedded SWF file and a JavaScript stream indicates a likely attempt to execute arbitrary code or exploit vulnerabilities within the PDF viewer or associated plugins.

Machine Learning

Nyx PDF Classifier malicious score 0.9999

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` `8c702f60d07ed3fe21053014a9ab550df3fd5b001b6f071ffedd8bb7b9881feb`	pdf-embedded-file	PDF EmbeddedFile object 16 at offset 0xAB1	52522 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact entropy is 7.89, consistent with packed or encrypted content.
`javascript_obj0006_000.js` `54e77e18a0fb4dac3e0319195034300c63709432dd57446043cf31041940f752`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF5	1558 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.