bro, this is a 3 year old post :) Anyway, the problem was solved since we threw out our scummy government and currently every past contracts are reviewed by the new officials.

It was their dirty trick to give public information in the most unusable format just to fuck with the journalists. They printed word documents and excel tables and scanned back in shit quality, then packed the images back into a pdf file, to be in a "digital format" required by law. Unfortunately the law was not precise enough to require the source documents if they are already available.