For direct links to official or trial versions, I recommend visiting Adobe's official website:
A "portable" version of software is a standalone application that does not require a traditional installation process. Instead, it runs directly from a folder or a USB drive, which is why versions like the file are frequently searched for. adobe illustrator cs3 portable 818 mb link
Every forum comment warned of "Trojan horses" or "DLL errors." For direct links to official or trial versions,
Before looking for a download link, it is vital to understand the risks associated with "portable" versions of paid software: adobe illustrator cs3 portable 818 mb link
: Tools like Inkscape provide powerful vector features legally and for free.