I disabled both Spotlight Suggestions and Bing yet Spotlight -- via SpotlightNetHelper -- still attempts to connect to api.smoot.apple.com:443 and wu.apple.com:80.
Good thought, but I disabled that too.
Edit: Twitter discussion regarding one of these issues. Note that Spotlight is doing this despite all relevant settings disabled (spotlight suggestions, bing, privacy, and logging).
wu.apple.com is an address associated with location service requests. If you've disabled location for spotlight, it's possible that it was something else requesting the location.
Edit: I think that you have to disable Location service for Spotlight separately in Privacy settings.