Definitely a Murray built bike, but as noted they were selling them to everyone else with different name badges on them.
The rear dropouts of the frame are one Murray unique item. The "cheese grater" front sprocket is another hint.
You may find stamps of "M O MFG" on the rims: Murray, Ohio, Manufacturing.
Depending on the era there could be "CWC" or big Murray "M" decals on the frame.
The tank and rack designs are also very similar to those shared with Sears and JC Higgins 1960's Flightliner/Spaceliner type bikes, all Murray built.
Nice bike, I would put new tires and tubes on it and have a great riding bike to keep or sell.
--Rob