Hi Sukhendu,
Haven't had any CPCS experience, but with PDFTools + NetWebReport, you change the filename (usually loc:PDFName) of the report after it's automatically set.
I'd find out what CPCS uses to set the filename, then right-click source and search for it. Then after it's automatically set, set it to whatever you like.
BUT .. If you asking about changing to a url (not a filename), then I'd have to ask WHY? If it's just for beautification purposes then it's missing the functionality of what is happening.
Some web browsers might not display it in a tab, but download it (depending on the settings). Some might ask to open it in adobe (or your default viewer) itself. It all depends on the browser your user is using .. and for most folk, that's a big variable.