PDF malware analysis — malicious · 3b39f2ab54d984c7

MALICIOUS

PDF

7.1 KB

MD5: 5bbfeaa84cba02cf554d17c1c73af2fb SHA-1: 392b5063716589dad21d211c625975d1025d2855 SHA-256: 3b39f2ab54d984c7384514d15dd678d9384503dbe0fe48eef82695484ec8a450

106 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: Malicious File

The PDF file contains embedded JavaScript and a Flash object, both of which are commonly used to deliver exploits. The presence of a `unescape()` call and embedded JavaScript stream strongly suggests an attempt to obfuscate malicious code. The embedded `exploit.swf` and `javascript_obj0017_000.js` files are likely components of the exploit chain, with the JavaScript intended to trigger the Flash exploit or download further stages.

Heuristics 6

RichMedia (Flash) high PDF_RICHMEDIA

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

unescape() found — often used to decode shellcode in PDF JS exploits
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
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` `35c12df4337d21094ac890f7ef01d618695025bd19f17caffa85710087ed6b9d`	pdf-embedded-file	PDF EmbeddedFile object 14 at offset 0x4D5	3764 bytes
`javascript_obj0017_000.js` `49e081eef1ffc4e4e24194254ed0bfca735172d31f304a1214befdb23545b69d`	pdf-javascript-stream	PDF /JS object 17 at offset 0x143D	1635 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 2 eval/decoder/string-building token(s).

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