Many medical schools now purchase Sketchy for their clinical clerkships. Ask your Internal Medicine Clerkship Director if the school has a site license. If they do, they may provide a course packet (PDF) containing the relevant Sketchy frames for the rotation.
Let’s be realistic. You are searching for "Sketchy Internal Medicine pdf exclusive" likely because you cannot afford the $399/year subscription or you want offline access.
The Risks:
The Reward:
If you subscribe to Sketchy (specifically the Step 2 & Clinical package), look in the "Resources" tab. They often provide official "Cheat Sheets" and "Image Summaries" as PDFs for printing. This is the only official version.