The leaked documents, known as the Panama papers, are revealing details of over 11 million records from the law firm, Mossac Fonseca.
No-one in Malawi has been named yet, but several world leaders, from Angola to Britain, China, Nigeria and Russia have been named.
The government of Malawi, like others in Africa and elsewhere in the world, was expected to carry out investigation on whether companies or individuals in this country might be on the list.
The papers show the numerous ways in which the rich can exploit secretive offshore tax regimes.
Twelve national leaders are among 143 politicians, their families and close associates from around the world known to have been using offshore tax havens.
The leak of millions of documents from a Panamanian law firm has revealed the rich and powerful globally hiding their wealth offshore on a massive scale.
It's emerged that more than half of the 200,000 secret companies.
The United States is reviewing the Panama papers, the Department of Justice has said.
Spokesman Peter Carr said: "While we cannot comment on the specifics of these alleged documents, the US Department of Justice takes very seriously all credible allegations of high level, foreign corruption that might have a link to the United States or the US financial system."
The White House has not made any specific comments about the leaked documents, but said the US has been a leading advocate of for increased transparency in the international financial system.
China's online censors and state media outlets are restricting access to reports on hidden wealth drawn from the leaked Panama documents that name relatives of current and retired Chinese politicians, including President Xi Jinping (pictured).
Searches for articles on websites and social media postings featuring the words "Panama documents'' could not be opened on Tuesday to view their content, the Associated Press reports. However, some searches for Panama-related news resulted in stories mentioning footballer Lionel Messi and others featured in the documents not related to China.