Proofread English Word/PDF Docs

I have a batch of documents—some in Microsoft Word, others already saved as PDF—that need a meticulous sweep for spelling, grammar, and punctuation errors only. No rewriting or style polishing; simply correct what is wrong and leave everything else intact... (Budget: ₹1250 - ₹2500 INR, Jobs: Copy Editing, Copy Typing, Copywriting, Data Entry, Data Processing, Editing, English Spelling, Proofreading, Word, Writing)