Russian businesses have been feeling the effects of the war in Ukraine through tax increases, rising costs caused by fuel shortages, and supply chains disrupted by sanctions. Now, there is another risk to contend with: Ukrainian drone strikes on their facilities.

As Ukraine wages a campaign to bring the conflict home to ordinary Russians, it has opened a new front aimed at the online marketplace Wildberries, a pillar of the country’s retail economy and a potent symbol of modern life in Russia.

In recent days, Ukraine has hit five warehouses belonging to Wildberries, a Russian analog to Amazon, as well as storage sites for other large retailers. Eight people were killed in attacks on Saturday and one person on Wednesday, the Russian authorities said. The strikes on Saturday alone were reported to have wiped out between 6 and 9 percent of the storage capacity of Wildberries.

Ukraine’s long-range strikes on Russian economic targets, including a monthslong campaign of attacks on oil processing facilities, are intended to pressure President Vladimir V. Putin to end the war, in part by hampering his ability to finance it. The oil strikes have caused fuel shortages that have led to lines at gas stations, and they could affect the coming harvest season.

Mr. Putin has signaled no intention of backing away from his objectives in the conflict, and the economy, while weakened by the war, is not on the verge of collapse. Still, analysts said that if the attacks on Russia’s business infrastructure continued, the ripple effects could pose severe economic challenges on top of a range of other war-related strains, reducing tax collections and adding to inflation.

Ukraine has targeted Wildberries warehouses in five regions across Russia, including a reported strike early Thursday in the Voronezh region, south of Moscow. A fire at a warehouse in Elektrostal, a city in the Moscow region, took three days to extinguish.

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