1. A malicious multimedia filtering apparatus based on sequential data processing, the apparatus comprising: a maliciousness classification model training unit extracting a predetermined feature from at least one or more types of moving pictures and then, through machine training, generating a maliciousness determination model for each of at least one or more classes; a malicious data classification unit sequentially inputting input moving pictures for which maliciousness is required to be determined, to the maliciousness determination model, and determining the maliciousness class of the input moving pictures, based on a probability that data at a determination time of the input moving pictures a probability that data at a determination time of the input moving pictures, and an accumulated maliciousness probability to a current time, wherein the maliciousness class is determined based on the probability that data at the determination time of the input moving pictures and previous probabilities of previous data of the sequentially inputted moving pictures for belonging to the determined maliciousness class of at least one second time, and where the second time is before the determination time of the sequentially inputted moving pictures and is within a time frame for generating accumulating maliciousness probabilities before the determination time; and a malicious information filtering unit cutting off the service if the maliciousness class belongs to a predetermined reference maliciousness class.