I have this issue with almost every PDF.
Even with PDFs I have created.
A few of them look alright when I first open them initially.
If I zoom in or out or change the orientation of my iPad, they look exactly what you have shown in your post.
I have tried a few different PDF readers on iPad and they display garbled text like this in every app.
Does anyone have an idea as to way this is happening or how to go about solving the issues with PDFs displaying this type of garbled text?
I am thoroughly frustrated with this.
I had a couple of large manuals and textbooks in PDF format that I wanted to put on my iPad.
I figured it wasn't the files size as much as it was, maybe, the sheer number of pages the iPad needed to render. So, I started to break down the manuals into smaller more manageable chunks, but I am still getting garbled text as a result.
I posted about this not that long ago and no one here seemed to have a clue or solution for this issue.
Someone may need to send some feedback to Apple.