Hi,
I am a native English speaker (Australian/UK) and full time writer and proofreader. I was born with the ability to spot errors in grammar, punctuation and syntax from a mile away, which is the real skill required to achieve accurate proofreading.
Several foreign corporations use my proofreading and editing services to clean up their business documents, especially when the authors may not be native English speakers.
I intend to use OCR to convert your PDF to Word, retaining the formatting if possible (or a very close approximation) and then perform the proofreading. I can begin today and deliver within 36 hours.
Thanks and best wishes,
Dan