what do 'ill timed' and 'ill gotten' mean?

[Shu]

English Language Tests, Intermediate level

ESL/EFL Test #175 "Expressions with ill: ill at ease, ill-mannered", question 6

Using their ......... and extraordinary financial resources and insider dealing, the oligarchs gained control over much of Russia's political apparatus.

(a) ill mannered
(b) ill gotten
(c) ill timed
(d) ill advised

English Language Tests, Intermediate level

ESL/EFL Test #175 "Expressions with ill: ill at ease, ill-mannered", answer 6

Using their ill gotten and extraordinary financial resources and insider dealing, the oligarchs gained control over much of Russia's political apparatus.

Correct answer: (b) ill gotten

Your answer was: incorrect
Using their ill timed and extraordinary financial resources and insider dealing, the oligarchs gained control over much of Russia's political apparatus.
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Sorry, can you tell me what do ' ill timed' and ' ill gotten' mean ? I'd like to know the difference between them. Thanks.

Shu

[Thanos]

Ill timed means with miscalculated timing, at the wrong time.
Ill gotten means gotten through the use of wicked, illegal, improper means.