Club president Maurizio Zamparini was greeted by an angry mob, who punched and spat at his car as he arrived at the Renzo Barbera having dispensed of the services of Gian Piero Gasperini.
General manager Pietro Lo Monaco, who had invested heavily in new players in January, followed Gasperini out of the door to be replaced by Giorgio Perinetti but UEFA Cup winner Malesani played down the extent of the fan backlash.
At his unveiling, he told reporters: "The confrontation was normal. I didn't see any barbarian invasions but it's understandable that there's a heated atmosphere.
"I analysed the squad before I said yes to the president. I knew a few players - I gave Andrea Dossena his debut. I've worked with Mauro Boselli and I'm getting to know the others."
A home defeat to Atalanta proved to be the final straw for Gasperini, who delivered only three wins since replacing Giuseppe Sannino in September.
"I hope the lads understand that we need to get moving and improve quickly," Malesani added.
"I need them to take responsibility and show willing to climb the table, but I have to do my job well too.
"I hope the fans are behind us on Sunday but we must not think about only getting results at the Barbera.
"Sometimes we'll get nothing at home so we need to get points on the road."
Striker Fabrizio Miccoli serves a one-match ban with Abel Hernandez and Andrea Mantovani missing through injury against Pescara.
Pescara boss Cristian Bergodi has also promised to turn things around while criticising the doom-mongers that have emerged following four straight defeats.
"I can already sense a funereal atmosphere in the air," he said.
"There has been talk of going from riches to rags. It's pessimistic.
"It seems like everyone has conducted our funeral and that everything has already been decided. And that's not good.
"The fans are understandably angry but the season is long and it's clear that this atmosphere is not helping the team. I've told the players that we can recover.
"Pescara is like that - it's a city that demands good football and good results."
Bergodi has no injury or suspension concerns as he looks to complete a season double over Palermo.