I want to embed a pdf document from Google Drive in my Blogger Post.
Select the pdf file you want to embed. Right click > Preview > More actions > Open in a new window. Now click More actions > Embed item. Copy the embed code and paste it on your blog post (File must be set publicly visible if you want everyone to see this).
<iframe src="https://drive.google.com/file/d/0B3VnSl89GUNxaXI1NzNrLUZTYWs/preview" width="640" height="480"></iframe>