DHAKA: Tim Cahill scored his first international hat-trick in over a decade as Australia crushed Bangladesh 4-0 in their 2018 World Cup qualifier in Dhaka on Tuesday. Already Australia's all-time leading scorer with 42 goals before Tuesday's Asian Group B clash, the evergreen Cahill took his career tally 45 with three first-half strikes. The Socceroos captain Mile Jedinak also found the net as the reigning Asian champions cruised to 4-0 lead by halftime then took their foot off the gas against a Bangladesh team ranked 120 places below them. Australia's resounding win took them to the top of the standings with 15 points from six matches with their remaining two games at home in March. Jordan are second, two points behind the Socceroos, but will go back ahead if they won in Kyrgyzstan later on Tuesday. The eight group winners and four best runners-up will all progress to the next phase, which decide Asia's four automatic qualifiers for Russia in 2018. Bottom-placed Bangladesh, with one draw from seven matches, are out of contention, along with Tajikistan, the other team in Pool B. Cahill's only previous hat-trick for his country was against Fiji in 2004, the same year he made his international debut. The 35-year-old had scored two goals in a match on eight occasions but his long wait for another treble ended quickly on Tuesday. Cahill opened the scoring after six minutes when he headed in a free-kick from the impressive Aaron Mooy. He made it 2-0 after 32 minutes when he volleyed in from close range then 3-0 when he slotted into empty net after Mooy broke free. Mooy also laid on Australia's final goal, just before the halftime break, when the midfielder's free-kick into the box was nodded back from Bailey Wright to Jedinak for the easiest of tap ins.