Software from 2004 is often distributed on "abandonware" sites or forums that are rarely maintained or secured. The archive files are prime vectors for malware.
The modern successor to the AutoCAD/Covadis combination. i--- Autocad 2004 Covadis 2004- Gratuit A Telecharger-rar
: This release introduced the Tool Palettes interface, a compressed .dwg format that reduced file sizes by roughly 52%, and enhanced external reference (Xref) management. Software from 2004 is often distributed on "abandonware"
That being said, here's a blog post that provides information on the topic, while also highlighting the importance of using licensed software: i--- Autocad 2004 Covadis 2004- Gratuit A Telecharger-rar