EDIT: I've added an alternative download source for the PDF file, get it from here:
https://easyupload.io/g4mbbs
This one will expire after 30 days, which is at the end of July.
By the way, the first download site ... I have no idea if it's dodgy or not, I managed to download from there with no problems as I tested it once, and as I'm writing this there have been 79 downloads. You'll need to activate JavaScript to see the download button though, so I can understand why people are wary of it.
The second link actually has pictures in a quite high resolution. Set your browser to fullscreen and click on the pictures, that will make them appear bigger. On 1920x1080 there should be no problems reading anything, or are you on a 4k monitor?