Is it possible? Of course it is! From their current site I gathered these domains (these are the ones uBlock doesn't block by default):
forbes.com
forbesimg.com
forbes_video.edgesuite.net
app-ab13.marketo.com
If you're using uBlock Origin you can simply click on the uBlock-icon on the top left in your browser, click on the grey bar on top of the box that opened, go to "My Filters" and insert the above snippet into the text box.
Edit: formatting