Hello @ecostaedd ,
I'd advise going into the program you used to create the PDF, and compressing the file first to remove extraneous data from it. Even if you used the same number of images, there's a myriad of factors (including the actual file size of the images) that would be contributing to the PDF's bloated size. If you cannot get your PDF below 5MB, you'll need to host it elsewhere for linking to.
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