PDF malware analysis — malicious · 4e476224d0a6c848

MALICIOUS

PDF

3.8 KB

MD5: 93e1ef81bcdda11e1997d3dbb0c1eb79 SHA-1: 8aaf40fd9aca008176672c1a0b1dc40f643698b4 SHA-256: 4e476224d0a6c848d6b23cade5c2b7df267c29d27e49b18cff11609b25e2d404

114 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

The PDF file contains embedded JavaScript and a Flash object, both of which are commonly used to exploit vulnerabilities. The embedded JavaScript stream, named 'javascript_obj0017_000.js', contains obfuscated code with eval() and String.fromCharCode calls, indicating it's designed to execute malicious actions. The presence of an embedded SWF file further suggests an exploit attempt. The script's likely intent is to download and execute a second-stage payload, contributing to the overall malicious nature of the document.

Heuristics 7

RichMedia (Flash) high PDF_RICHMEDIA

PDF contains /RichMedia (Adobe Flash) which is a historic exploit vector
eval() call high PDF_EVAL

eval() found — commonly used for obfuscated exploit execution
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.
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
`exploit.swf` `09da31fcb002129249bb529a7f84709739a96f62781db5f4c6d9bf6e4308eb15`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x4D1	102 bytes
`javascript_obj0017_000.js` `c104f6fae50ca0181df5cc36b56effd6db447c3acb696672404b63df437bf7c9`	pdf-javascript-stream	PDF /JS object 17 at offset 0x5EB	1841 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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