Hi Wallacealeco,
I did look into your PDFs. As you said, they have some marked areas known as annotations. Those currently won't be displayed in Calypso. But probably I'm able to show these in the next version of Calypso.
Until then I'd suggest to make those annotations within Calypso. The current annotation support is currently in work and will be much improved in the near future.
Just to get an impression what it means to a developer to simply show PDFs in their apps, look at this
comparision of popular PDF libraries on iOS and Androis. Support for annotations in PDFs costs them some bucks.
But as I already mentioned, I probably might show you that annotations in a future version of Calypso
