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PDF_DLOADR.YIY

April 19, 2017
 Analysis by: Cris Nowell Pantanilla
 ALIASES:

Trojan.PDF.Phish.kb (Kaspersky), PDF/TrojanDownloader.Agent.GR (ESET-NOD32)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: No

  • In the wild: Yes

  OVERVIEW


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

However, as of this writing, the said sites are inaccessible.

  TECHNICAL DETAILS

File Size:

35,016 bytes

File Type:

PDF

Memory Resident:

No

Initial Samples Received Date:

04 Apr 2017

Arrival Details

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

Other Details

This Trojan connects to the following possibly malicious URL:

  • http://{BLOCKED}ti.com.br/clientes/boletos/

However, as of this writing, the said sites are inaccessible.

  SOLUTION

Minimum Scan Engine:

9.850

FIRST VSAPI PATTERN FILE:

13.318.08

FIRST VSAPI PATTERN DATE:

04 Apr 2017

VSAPI OPR PATTERN File:

13.319.00

VSAPI OPR PATTERN Date:

05 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.YIY. 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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