  Results are presented for XMM-Newton observations of five hard X-ray sources
discovered by INTEGRAL in the direction of the Scutum Arm. Each source received
more than 20 ks of effective exposure time. We provide refined X-ray positions
for all five targets enabling us to pinpoint the most likely counterpart in
optical/infrared archives. Spectral and timing information (much of which are
provided for the first time) allow us to give a firm classification for IGR
J18462-0223 and to offer tentative classifications for the others. For IGR
J18462-0223, we discovered a coherent pulsation period of 997+-1 s which we
attribute to the spin of a neutron star in a highly-obscured (nH = 2e23 /cm2)
high-mass X-ray binary (HMXB). This makes IGR J18462-0223 the seventh
supergiant fast X-ray transient (SFXT) candidate with a confirmed pulsation
period. IGR J18457+0244 is a highly-absorbed (nH = 8e23 /cm2) source in which
the possible detection of an iron line suggests an active galactic nucleus
(AGN) of type Sey-2 situated at z = 0.07(1). A periodic signal at 4.4 ks could
be a quasi-periodic oscillation which would make IGR J18457+0244 one of a
handful of AGN in which such features have been claimed, but a slowly-rotating
neutron star in an HMXB can not be ruled out. IGR J18482+0049 represents a new
obscured HMXB candidate with nH = 4e23 /cm2. We tentatively propose that IGR
J18532+0416 is either an AGN or a pulsar in an HMXB system. The X-ray spectral
properties of IGR J18538-0102 are consistent with the AGN classification that
has been proposed for this source.
