Kerogen as one the main constituents of mud rocks is not thoroughly understood in terms of its mechanical characteristics. Kerogen is not as stiff as inorganic minerals within the rock matrix, but it can have a significant impact on the propagation of fractures. This becomes more important in organic rich shale reservoirs. In this study, first we proposed a fast method to predict mechanical properties of kerogen using Raman spectroscopy, which is a function of its molecular structure and chemical compounds, and then incorporated the results in hydraulic fracturing simulation. FLAC software was used to simulate opening of a fracture in the shaly and kerogen rich members of the Bakken formation. Then results were compared with a shale simple model missing organic matter properties. Results showed organic matter mechanical characteristics affects the hydraulic fracturing simulation by having faster fracture closure and requiring more fracing volume to achieve a specified fracture length compared to the simple model. The proposed method of using Raman spectroscopy can be used to make a profile of mechanical properties of organic matter and then be used in hydraulic fracturing simulation to optimize the operation.