You already may have seen those "premium link generators" for different file hosters.
http://www.cyber4shared.com is one of them with annoying ads - I can block them mostly with browser add-ons "AdblockPlus", "NoScript" and Greasemonkey scripts "* *Adblock"(https://github.com/Mechazawa/) + "Anti-Adblock Killer".
cyber4shared.com is not a file proxy, files are directly downloading from the 4shared domain - a hole in their download system it seems.
Tip:
Package the files in your 4shared account to a "B1" archive file up to 2GB by checking multiple files and then clicking "download", "ZIP" is for premium users only.
You need the "B1 free archiver" to unpack after download.
Click the file you want to download, copy the URL of the newly opened window/tab and paste it to the cyber4shared.com "generator" input field.