1. A method for filtering image-based messages, the method comprising: receiving an image-based message from a sender; and executing instructions stored in memory, wherein execution of the instructions by a processor: identifies via image analysis that one or more text lines are present within boundaries of an image of the image-based message, identifies whether the one or more text lines identified as being present within the image fit a predetermined numeric pattern, the predetermined numeric pattern based on numeric character count values corresponding to numbers of consecutive characters and spaces, assigns a score to the message based on whether the text lines fit the predetermined numeric pattern, and filters the received image-based message based on the assigned score.