PDF malware analysis — malicious · 49cf714c1e6a18c1

MALICIOUS

PDF

54.2 KB

MD5: becdc6827895bb09f927ba014bac7ca3 SHA-1: cea8e513a6f0a4e6369befc00ed9492a0f864e8f SHA-256: 49cf714c1e6a18c141085633434335ef97498a2511ab059dbb5c93617b79edcb

124 Risk Score

Malware Insights

MITRE ATT&CK

T1559.002 Component Object Model Hijacking T1059.001 PowerShell

This PDF contains embedded JavaScript and a Flash object, both flagged as malicious. The JavaScript stream, named 'javascript_obj0006_000.js', is likely responsible for executing the embedded Flash file, 'Adobe.swf'. This combination suggests a multi-stage attack designed to exploit vulnerabilities or deliver a secondary payload.

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 0xAC5	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` `617a28601a8e2f7aab6d699c0c2a0cdda5853cab242d4bfc06879a8fd2a7cc5e`	pdf-javascript-stream	PDF /JS object 6 at offset 0xF5	1564 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.