This is driving me crazy! I can't believe no one has a clue. Just now I was thinking maybe it was an old road frame someone braze cantilevers and that high wire on for 'cross but why leave a Dynamo bracket? And an old road bike would most likely be lugged.
If it really is a Hybrid most of them, as T-Mar says are '90 and later but I can't recall many with highwire cables like that except Bianchi but that would be lugged until the mid '90s.
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk