Search Manager is a Google Chrome extension that changes the new tab screen that is displayed when you click on a new tab button in Chrome. This new screen will contain a search field where you can search using either Bing or Yahoo. It will also display the weather and time. The extension is commonly installed by adware or unwanted programs that are installed on the computer. To remove Search Manager and other unwanted programs for free, you can use the removal guide below. If you have found Search Manager installed without your permission or knowledge, then you may want to remove it.
Source: https://www.bleepingcomputer.com/virus-removal/remove-search-manager-chrome-extension