Abstract
The appearance of malicious apps is a serious threat to the Android platform. Most types of network interfaces based on the integrated functions, steal users' personal information and start the attack operations. An effective and automatic malware detection method using the text semantics of network traffic. In particular, each HTTP flow generated by mobile apps as a text document, which can be processed by natural language processing to extract text-level features, the use of network traffic is used to create a useful malware detection model. By examining the traffic flow header using N-gram method from the Natural Language Processing (NLP). Then, an automatic feature selection algorithm based on chi-square test to identify meaningful features. It is used to determine whether there is a significant association between the two variables and perform malware detection using NLP methods by treating mobile traffic as documents. By applying an automatic feature selection algorithm based on N-gram sequence to obtain meaningful features from the semantics of traffic flows. The methods reveal some malware that can prevent detection of antiviral scanners. In addition, detection system is to drive traffic to institutional enterprise network, home network, and 3G / 4G mobile network. Integrating the system connected to the computer to find suspicious network behaviours.