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PDF_DLOADR.YJJ

May 03, 2017
 Analysis by: Cris Nowell Pantanilla
 PLATFORM:

Windows

 OVERALL RISK RATING:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

Infection Channel:

Spammed via email


This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

  TECHNICAL DETAILS

File Size:

7,962 bytes

File Type:

PDF

Memory Resident:

No

Initial Samples Received Date:

27 Apr 2017

Payload:

Connects to URLs/IPs

Arrival Details

This Trojan arrives as an attachment to email messages spammed by other malware/grayware or malicious users.

Download Routine

This Trojan accesses the following websites to download files:

  • http://{BLOCKED}desolucoes.com.br/SCANNED/YXT3512KCBOIYS/

Other Details

This Trojan does the following:

  • Once the user clicked the link in the PDF, the user will be redirected to the said site where the archive "Scanned-device-name-QTS9611RMCKSBO.zip" is downloaded. The said archive file contains a malicious JS file detected as JS_NEMUCOD.ELDSAUEL.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.366.05

FIRST VSAPI PATTERN DATE:

27 Apr 2017

VSAPI OPR PATTERN File:

13.367.00

VSAPI OPR PATTERN Date:

28 Apr 2017

Step 1

Before doing any scans, Windows XP, Windows Vista, and Windows 7 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 PDF_DLOADR.YJJ. 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 this Knowledge Base page for more information.


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