Use the Add-On "Popup Blocker (strict)", it prevents all kind of forced tabs and is more reliable than any adblocker in that regard. It just shows a short message that a link wants to be opened, but it stays on the site. Obviously don't use it alone, always with a full adblocker, like uBlock Origin.
With Viking Files, you simply click several times on the download button and all the redirects gets ignored until the real download starts.
But the Add-On is indeed strict, it can be annoying during day-to-day browsing, simply deactivate it, as long as you browse on trusted sites.