PDF Text Edits (Illustrator)

I have a single–page PDF that was originally built in Adobe Illustrator, but the .ai file is long gone. I need several bits of text—names, numbers, short phrases—replaced while every other design element stays exactly as it is... (Budget: $10 - $30 AUD, Jobs: Adobe Acrobat, Adobe Creative Suite, Adobe Illustrator, Adobe InDesign, Graphic Design, Illustrator, Photoshop, Print Design)