  We present the broadband analysis of the powerful quasar 4C04.42 (z=0.965)
observed by XMM and INTEGRAL. The 0.2--200 keV spectrum is well reproduced with
a hard power-law component ($\Gamma\sim$1.2), augmented by a soft component
below 2 keV (observer frame), which is described by a thermal blackbody with
temperature kT$\backsimeq$ 0.15 keV. Alternatively, a broken power-law with
E$_{break}$=2 keV and $\Delta\Gamma$=0.4 can equally well describe the data.
Using archival data we compile the not-simultaneous Spectral Energy
Distribution of the source from radio to gamma-ray frequencies. The SED shows
two main components: the low frequency one produced by Synchrotron radiation
from the electrons moving in the jet and the high energy one produced through
external Compton scattering of the electrons with the photon field of the Broad
Line Region. Within this scenario the excess emission in the soft-X ray band
can be interpreted as due to Bulk Compton radiation of cold electrons. However,
some other processes, briefly discussed in the text, can also reproduce the
observed bump.
