ABUSE.MOM
THREAT REPORT

IP Threat Report
52.138.39.105

ABUSE.MOM — BEHAVE OR GET EXPOSED

Generated: 2026-05-20 20:12:54
First seen: 2026-03-21 21:00:05
Last seen: 2026-03-23 07:01:21
255

⛔ Verdict: BLOCK

This IP address has been classified as a source of malicious automated activity. Threat score: 255/100. Total malicious requests observed: 25.

DANGER_PATHRATIO_404BURST
01

Geolocation & Classification

IP Address
52.138.39.105
Type
Hosting
Country
🇨🇦 Canada
City
Toronto
ISP
Microsoft Corporation
Organization
Microsoft Azure Cloud (canadacentral)
Autonomous System
AS8075 Microsoft Corporation
Hit Count
25
02

Detection Signatures

SignatureDescriptionPointsSeverity
Danger strong hits: 19High-risk paths: shells, RCE vectors, exploits+100
Danger medium hits: 23Medium-risk: admin panels, config files+60
404 ratio >= 60%Majority of requests returned 404 — enumeration+25
Burst: 23 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 29 req / 10sAbnormally fast request rate — automated scanning+35
Burst: 19 req / 2sAbnormally fast request rate — automated scanning+35
Burst: 24 req / 2sAbnormally fast request rate — automated scanning+35
Danger strong hits: 14High-risk paths: shells, RCE vectors, exploits+100
Danger medium hits: 29Medium-risk: admin panels, config files+60
Burst: 41 req / 10sAbnormally fast request rate — automated scanning+35
Danger strong hits: 27High-risk paths: shells, RCE vectors, exploits+100
Danger medium hits: 36Medium-risk: admin panels, config files+60
Burst: 56 req / 10sAbnormally fast request rate — automated scanning+35
Σ = 715
03

Observed Activity

Reconstructed HTTP requests from server access logs. Target domains redacted for security.

[redacted]
GET
/
200
[redacted]
GET
/page
200
Requests shown: 2 · HTTP 404: 0 · Dangerous patterns: 0

* Typical request patterns for detected signatures. Actual target domains are redacted.

04

Timeline

2026-03-21 21:00:05
First malicious request detected
IP entered monitoring from server access logs
During observation
Multiple detection signatures triggered
Danger strong hits: 19 (+100), Danger medium hits: 23 (+60), 404 ratio >= 60% (+25)
2026-03-23 07:01:21
Last malicious request observed
Total score reached: 255/100
Next cycle
IP blocked — all subsequent requests denied (HTTP 403)
Added to blocklist automatically
05

Network Provider

Microsoft Corporation
AS8075 · 🇨🇦 Canada
06

Recommendations

Actions taken & recommended

  • IP 52.138.39.105 is blocked at application level (HTTP 403)
  • Consider blocking at firewall level (iptables/CSF) to reduce server load
  • Report abuse to the network provider via their abuse contact
  • Ensure sensitive files (.env, .git, backups) are not accessible from the web

🔎 Directory Scan Defense

IP 52.138.39.105 is enumerating directories. Configure fail2ban apache-404 jail after 10+ 404 errors. Disable directory listings. Normalize all 404 responses.

🌊 Flood / DDoS Mitigation

Implement limit_req_zone in nginx. Deploy CDN with DDoS protection. Configure SYN cookies and connection tracking to throttle 52.138.39.105.

09

Blacklist Status (DNSBL)

This IP was checked against major DNS-based blacklists used by mail servers and firewalls worldwide.

✓ Clean
ix.dnsbl.manitu.net
✓ Clean
dnsbl.sorbs.net
✓ Clean
zen.spamhaus.org
✓ Clean
bl.spamcop.net
✓ Clean
dnsbl-1.uceprotect.net
✓ Clean
b.barracudacentral.org
✓ Clean
truncate.gbudb.net
✓ Clean
psbl.surriel.com

Checked: Spamhaus, SpamCop, Barracuda, SORBS, CBL, UCEProtect. Results may change over time.

10

Threat Analysis

52.138.39.105 has been assigned a threat score of 255/100 (Critical). With this rating, the IP falls into the critical severity bracket — among the most dangerous addresses in our monitoring database.

The following attack categories were identified:

Path EnumerationRequest Flooding

📊 Threat Analysis

52.138.39.105 is registered in Toronto, Canada, operating on the network of Microsoft Corporation. This IP first appeared in our threat feeds after triggering multiple behavioral detection signatures. During its 1-day observation window, we recorded 25 hostile requests from this IP — roughly 25 per day on average. The IP is classified as hosting/datacenter infrastructure, commonly associated with rented servers used for automated attack campaigns, botnet command-and-control, or vulnerability scanning at scale. Two attack patterns were identified (Path Enumeration and Request Flooding), suggesting a semi-automated campaign that targets multiple vulnerabilities. Our records show 101 malicious IPs originating from Canada, positioning it as a significant contributor to global threat activity. With a threat score of 255/100, this IP is among the most dangerous addresses in our database. Immediate and complete blocking is strongly recommended.

This IP belongs to a hosting or data center provider. Malicious traffic from hosting infrastructure often originates from compromised VPS instances, rented servers used for scanning campaigns, or abused free-tier cloud accounts. Hosting providers typically respond to abuse reports within 24-72 hours.

11

Related Threats

🇨🇦 Top threats from Canada

45.91.23.64 (305)147.15.149.40 (300)148.116.72.171 (300)89.251.0.24 (295)89.251.0.128 (295)View all →

🏢 Same network: AS8075

74.241.249.229 (340)4.182.24.88 (285)20.65.61.3 (283)4.205.39.97 (283)20.29.71.103 (283)View all →
12

Security Intelligence

💡 Brute Force Attack Mechanics

Brute force attacks systematically try username and password combinations to gain unauthorized access. Modern attacks leverage credential databases from previous breaches, testing millions of combinations using distributed botnets across multiple IP addresses.

💡 Log Correlation and SIEM Integration

Correlating logs across web servers, firewalls, DNS, and authentication systems reveals attack patterns invisible in individual log sources. Modern SIEM platforms use statistical analysis to connect related events across time and systems.

🔍 Check Any IP Address

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