Difficulty Embedding PDF Brochure

I'm currently facing a bit of a challenge and could use some guidance. I'm attempting to embed a PDF brochure of our company onto the following webpage: https://www.houstonbuildingrepair.com/flat-roof-repairs/

However, despite my best efforts, I seem to be hitting a roadblock. I've tried various methods, including direct embedding and using iframe tags, but none seem to work properly.

Could someone please provide me with some insight or a step-by-step guide on how to successfully embed a PDF onto this webpage? Any advice or assistance would be greatly appreciated.