Corrupted PDF, need assistance with fixing

I have many corrupt PDF's and cannot open them or convert them. Basically I copies all files from a computer with a virus and now I cannot open any of the pdf files. I am including two pdf files for you to sample and make sure they work. Once you get them to open properly I want a screenshot of the files. You will need to tell me the program you are using to open them. I will need to convert over 50 files MYSELF, so I need to know the method. Any bids over $50 will be ignored!!!! READ ABOVE PROPERLY IF YOU WANT THIS JOB