Pondus
3
as stated above, Linkswift is not malicious… it is classed as PUP
PUP = not a virus / Possible Unwanted Program
LinkSwift is technically not a virus but a potentially unwanted program (PUP) that takes at the format of extension to hijack users’ browsers including Internet Explorer, Mozilla Firefox as well as Google Chrome.
Bundled with freeware ((video recording/streaming, download-managers or PDF creators), LinkSwift goes to your PC without your knowledge. And then, it will install LinkSwift Toolbar onto your PC; meanwhile, all of your browsers will be added extension—LinkSwift to change your internet experience. As a result, you will receive popup ads from LinkSwift in your search results.
PUP scan is default OFF in quick/full scan … but default ON in boot scan
you can also remove it with AdwCleaner / Malwarebytes found here http://forum.avast.com/index.php?topic=53253.0