  We develop a symmetric traversable wormhole model, integrating Einstein's
gravitational coupling phantom field and a nonlinear electromagnetic field.
This work indicates the emergence of negative ADM mass within a specific
parameter range, coinciding with distinct alterations in the wormhole's
spacetime properties. Despite violating the Null Energy Condition (NEC) and
other energy conditions, the solution exhibits unique characteristics in
certain energy-momentum tensor components, potentially accounting for the
manifestation of negative mass.
