Urgent Book Cover Spine Correction on a supertight budget

I need the spine of an already-designed paperback cover resized right away. The current file fails print checks because both its width and height are off, but I have the exact millimetre measurements the printer requires... (Budget: $30 - $250 USD, Jobs: Adobe Illustrator, Adobe InDesign, Adobe Photoshop, Creative Design, Graphic Design, Illustrator, PDF, Photoshop, Print Design, Visual Design)