In Rails, how to respond_to irrelevant non-http requests?

I have a relatively large website, and all day everyday it gets hit with requests that are irrelevant from all sorts of IP addresses. A common one is example.com/home.zip.

This hits my Home controller, index action {"controller"=>"home", "action"=>"index", "format"=>"zip"}. Currently, it causes a 500 error:

Missing template home/index, application/index with {:locale=>[:en], :formats=>[:zip], :handlers=>[:erb, :builder, :arb]}

I imagine the graceful way of handling it is a 404. The closest I've come to a solution is this:

respond_to do |format|
  format.html
  format.any { redirect_to :foo }
end

Except of redirect_to :foo I would do render file: "#{Rails.root}/public/404.html", status: 404. Am I on the right track?