Hi @jdurancal,
I don't think the screenshot provided is the Canvas app itself, but probably whatever PDF viewing app your device has installed on it. Canvas does have a specific assignment submission type where students can use the DocViewer tool to annotate an instructor-provided file, but that ability is limited to those specific assignments as far as I know.
So, with that being said, Canvas itself wouldn't have general annotation abilities on the web either. There are plenty of Windows or Mac apps that do provide annotation capabilities for PDF files though, similar to what you're seeing from what I think is the app on your mobile device. The annotation assignments I mentioned above do work on the web version of Canvas as well (just wanted to mention that for completeness).
I could be off the mark on this, and if I am I'm sure someone else will comment and let us know. I hope this info might help though.
-Chris