A paper document processing apparatus includes: a document image acceptance unit that accepts an image acquired; a document image recording unit that records a document image in a storage; an attribute information acquisition unit that acquires attribute information based on the document image; an acquisition result evaluation unit that evaluates whether an acquisition result of the acquired attribute information is affirmative or negative; a medium output unit that outputs information indicating a scan status of the paper document that is formed on a medium while specifying the document image for which the acquisition result of attribute information is evaluated negative; a medium acceptance unit that accepts the information formed on the medium; and an attribute information reacquisition unit that reacquires the attribute information of the document image by specifying the document image in accordance with the accepted information.