Adform Delivery Script Compromised: Wallet Addresses Replaced on Clipboard and Screen

Adform Delivery Script Compromised: Wallet Addresses Replaced on Clipboard and Screen 1. Basic Information Article Title : Online ad firm Adform’s script compromised to steal cryptocurrency Publisher : BleepingComputer Publication Date : 2026-07-31 Severity : High Source URL : https://www.bleepingcomputer.com/news/security/online-ad-firm-adforms-script-compromised-to-steal-cryptocurrency/ Related Malware : Obfuscated JavaScript crypto clipper Threat Actor : Unknown CVE : None Products/Environments : Adform trackpoint-async.js, s2.adform.net, Web browser, Bitcoin, Ethereum, TRON Related Information Sources Kevin Beaumont Primary Analysis Adform Security Notice 2. Summary An obfuscated JavaScript is added to a legitimate ad tracking library. This is a supply chain attack that replaces cryptocurrency destination addresses on the user's clipboard and web pages with the attacker's address when they visit infected sites. 3. Attack Flow Wallet Replacement via Ad Delivery Supply Chain The attacker compromises Adform's delivery infrastructure or the trackpoint-async.js generation path. A self-executing obfuscated payload is injected into the end of the legitimate tracking library at s2.adform.net. Many downstream sites using Adform deliver the script to user browsers. The script continuously monitors the clipboard while the page is open and detects Bitcoin, Ethereum, and TRON address patterns. It replaces the detected string with the attacker's wallet. It also rewrites the wallet address displayed on the page. Another Adform-hosted script sends the victim's IP, referrer, and URL path to 84.32.102[.]230:7744 . 4. Attacker Position and Execution Location Point of Compromise: Adform's legitimate JavaScript delivery path Execution Location: User browser context while viewing downstream websites Data Exfiltration: 84.32.102[.]230:7744 and the attacker's wallet 5. Visibility for Victims and Administrators Victims / Users The website displays normally. Only the destination address