Sorry, there is no way that takes less than a week (or maybe month) to restore file like this.
As far I know - hiberfil.sys is compressed and not well documented. Long time ago there was a tool to read windows 2000 hiberfil.sys, it was called SandMan. I think this will not work with Windows 6.0 and higher.
Even if you manage to reproduce raw memory that was dumped into hiberfil.sys - do not expect you will find your file there. Process memory will be fragmented, so you would have to put everything together to make it "readable" like process memory dump from Task Manager. Which is not very readable too.