Members of the terrorist group attempted to enter Samarra on Wednesday but were forced by PMU forces to retreat, al-Mayadeen TV reported.
Seven Daesh hideouts were also pounded in two areas north of Samarra, which caused heavy damage.
The PMU forces on Tuesday used mortar shells and artillery rounds to destroy a Daesh hideout near the Alas oilfields, located northeast of Tikrit, the provincial capital of Salahuddin province.
Daesh has intensified its attacks in Iraq amid Baghdad’s call on the US to pull out its forces from the Arab country.
In a vote on January 5, the Iraqi parliament called for an end to the presence of all foreign troops, including Americans.
The vote came two days after the US military - acting on US President Donald Trump’s order - launched a fatal drone strike on senior Iranian anti-terror commander Lieutenant General Qassem Soleimani upon his arrival in the Iraqi capital at the invitation of the Baghdad government.
The attack also claimed the lives of Abu Mahdi al-Muhandis, the second-in-command of the PMU, and eight other Iranian and Iraqi people.
Washington has threatened sanctions should US troops be expelled instead of heeding the Iraqi parliament’s call to end the occupation of the country.