Replace logos & web address on pages within multiple PDF's

Hi, I need someone to replace logos and web address in the header and footer of multiple PDFs. There are 18 PDFs of varying size that need to be updated and I would like them saved in a print ready format. The files are in Arabic, however, it is not essential to speak it. The successful applicant must be familiar with PDF editing to ensure a very high accuracy rate. Quality of the finished products is of utmost importance, so attention to detail is a must. I look forward to working with you!