The only really complicated part of this equation is the two-weapon fighting part; shuriken are considered light weapons for the purposes of two weapon fighting. I've assumed that the rogue consistently uses +1 shuriken.
- Standard Attack: +7 base +5 Dex +1 bonus via the feat Weapon Focus (shuriken) +1 enhancement bonus via the +1 shuriken equals +14 ranged or +15 if target is within 30 ft. via the feat Point Blank Shot (1d2+3/19-20 or 1d2+4/19-20 if target is within 30 ft., +1 shuriken)
- Full Attack: (main hand) +7 base +5 Dex +1 bonus via the feat Weapon Focus (shuriken) +1 enhancement bonus via the +1 shuriken −2 penalty via the feat Rapid Shot −2 penalty via the feat Two-weapon Fighting equals +10 twice via the feat Twin Throw/+10/+5 ranged or +11 twice/+11/+6 if target is within 30 ft. via the feat Point Blank Shot (1d2+3/19-20 or 1d2+4/19-20 if target is within 30 ft., +1 shuriken) and (off-hand) +7 base +5 Dex +1 bonus via the feat Weapon Focus (shuriken) +1 enhancement bonus via the +1 shuriken −2 penalty via the feat Rapid Shot −2 penalty via the feat Two-weapon Fighting equals +10/+5 ranged or +11/+6 if target is within 30 ft. via the feat Point Blank Shot (1d2+2/19-20 or 1d2+3/19-20 if target is within 30 ft., +1 shuriken).
The thrower's Strength bonus to damage is halved for the thrower's off-hand attacks which is why main hand and off-hand attacks are separated in the Full Attack bullet. Had the rogue Str 10, the attacks could simply be run together as +10 twice/+10/+10/+5/+5. I wouldn't do that in case the rogue were to gain an in-combat bonus to his Strength, but a GM may prefer this second run-together format over the above format because a typical creature makes its attacks in order from its attacks at its highest (base) attack bonus to its lowest, and this makes it clear which attacks should be made when. I've never had a GM mandate main hand and off-hand attacks be interleaved rather than just making all the main hand attacks then all the off-hand ones, but your GM might, and I appreciate her commitment to the rules.
To be clear, that +10 twice/+10/+10/+5/+5 is +10 twice due to base attack bonus and the feat Twin Throw, +10 again from the feat Rapid Shot, +10 again from the first off-hand attack, +5 for the main hand iterative attack, and +5 again for the feat Improved Two-weapon Fighting.
Keep in mind that the feat Two-weapon Fighting merely reduces penalties—anybody can two-weapon fight, but a dude with the feat Two-weapon Fighting is better at it. It's the feat Improved Two-weapon Fighting that adds a second and normally impossible off-hand attack at a −5 penalty, and it takes the feat Greater Two-weapon Fighting—for which this rogue doesn't yet meet the prerequisites—to get a third at −10.