Analysis by: Neljorn Nathaniel Aguas
ALIASES:

PDF:PhishingX-gen [Phish] (AVAST)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 INFORMATION EXPOSURE:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel: Downloaded from the Internet, Dropped by other malware

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

  TECHNICAL DETAILS

File Size: 97,231 bytes
File Type: PDF
Memory Resident: No
Initial Samples Received Date: 09 Feb 2024
Payload: Connects to URLs/IPs

Arrival Details

This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Other Details

This Trojan does the following:

  • The PDF contains an image that lures the user to click and redirect to the following malicious website in a browser:
    • https://{BLOCKED}osparaempresas.com.br/0xox.php
      • which redirects to:
        • https://{BLOCKED}ihtrodtme4kctq6xiehyxcgzvabkpcsj6n6bueoqrigds4qyuacve.ipfs.cf-ipfs.com/# → loads the phishing site
  • It connects to the following possibly malicious website if the user entered and submitted an email address:
    • https://{11 Random Alphanumeric Characters}.{BLOCKED}edxout.online
  • It disables the following keyboard shortcuts to prevent the user to analyze the source code:
    • Ctrl+Shift+C → Inspect Element tool
    • Ctrl+Shift+I → Developer Tools
    • Ctrl+Shift+J → Developer Tools
    • Ctrl+U → View Page Source
  • If the user opened the Developer Tools or Inspect element tool via other means, it redirects the browser to the following website:
    • https://www.microsoft.com

  SOLUTION

Minimum Scan Engine: 9.800
FIRST VSAPI PATTERN FILE: 19.188.04
FIRST VSAPI PATTERN DATE: 29 Feb 2024
VSAPI OPR PATTERN File: 19.189.00
VSAPI OPR PATTERN Date: 01 Mar 2024

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Scan your computer with your Trend Micro product to delete files detected as Trojan.PDF.PHISH.CV. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:


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