Samarium hexaboride (SmB6) is a purported topological Kondo insulator, with theory predicting that the experimentally observed metallic surface states manifest from a topologically non-trivial insulating bulk band structure. The insulating bulk itself is driven by strong correlations, and both bulk and surface are known to host compelling magnetic and electronic phenomena. We employed X-ray absorption spectroscopy (XAS) and X-ray magnetic circular dichroism (XMCD) at the Sm M4,5 edges to probe the surface and bulk magnetic properties of Sm 2+ and Sm 3+ within SmB6. We observed an unexpected anti-alignment to the applied field of the Sm 3+ magnetic dipole moment below T = 75 K and of the total orbital moment of samarium below 30 K. The total bulk magnetization at 2 K is, however, positive and driven by Sm 2+ Van Vleck susceptibility as well as 1% paramagnetic impurities with µ Eff = 5.2(1) µB. This indicates the diamagnetic-like Sm 3+ magnetism is only a portion of the net magnetization, partially offsetting the response of paramagnetic impurities known within the bulk.