Think about it for a minute.. If there actually were such a library, it would be closed down in a flash because of the security ramifications of leaving it open.. In addition, most such malware are directed to scamming users across the world.. Most such things are illegal in most, if not all countries.

And most importantly, this is a security forum you've posed the question in.. Why would security folks post a list of viruses/malware for the entire world to download and distribute.. hmmmmmm

Hope this helps.