SUSPICIOUS — free-robux-generator-com-roblox-hack_GM431946152.pdf

SUSPICIOUS — free-robux-generator-com-roblox-hack_GM431946152.pdf is a pdf sample analyzed by MalwareAnalyzer by Cyble with a suspicious verdict (56/100). 4 of 53 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

• SHA-256: 1fc1b3d8616a9b24b785cb4f01ca272b69391cec0ba336266467b7e7680c76c2
• SHA-1: 1a09c7d32c753cab1076e58506493ddc90ac4985
• MD5: 227492c347df3d003ae78e85c87ef4a1
• ssdeep: 768:GWkepcAMr9oqbavYzNgkn5xD97GfplhcUtlJASdVzlIgc3l3Vs:GWkepcAMr5Jhn5fOhcUtDA2Vzqn3Vs
• TLSH: T10130AFF7511BCD6873819F07D5F41402B05CA7CA3411EAA55AD8B72CC5392FC6B81BA2
• Submitted as: free-robux-generator-com-roblox-hack_GM431946152.pdf
• File type: pdf · Size: 37682 bytes
• Verdict: suspicious (56/100)

Detections (4 of 53 engines)

• MalwareAnalyser heuristics (entropy/packer): high-entropy-blob
• Microsoft Defender: Trojan:PDF/Phish.CFN!MTB
• Emsisoft (Emergency Kit): PDF.Spam.Heur.2
• Trellix Stinger (McAfee): PDF/Phish-TWM!227492C347DF

MITRE ATT&CK

• T1112
• T1105

Why this verdict

The suspicious score of 56/100 is the fusion of 6 weighted signals:

• Embedded network infrastructure: https://netcdn.xyz/app/431946152/free-robux-generator-com-roblox-hack-game-hack - static signal, weight 0.35, confidence 0.60
• Document active content: uri-action - static signal, weight 0.30, confidence 0.60
• Packing/obfuscation: high-entropy-blob - static signal, weight 0.25, confidence 0.55
• Observed at runtime: Modify Registry (T1112) (rule Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
• Contacted 16 external host(s) at runtime - network signal, weight 0.12, confidence 0.55
• Extracted generic config (1 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30

Dynamic analysis (windows)

9645 behavior events · 1 ATT&CK techniques · 3 dropped files.

Runtime network

• www.msftconnecttest.com
• rb.symcd.com
• rb.symcb.com
• inference.location.live.net
• searchapp.bundleassets.example
• to-do.office.com
• staging.to-do.officeppe.com
• teams.cloud.microsoft
• outlook.office.com
• outlook.office365.com
• outlook.cloud.microsoft
• desktop-hsgcbep
• 250.255.255.239.in-addr.arpa
• b.f.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• 3.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• 252.0.0.224.in-addr.arpa
• 2.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• ntp.ubuntu.com
• 255.255.254.169.in-addr.arpa
• 79.243.254.169.in-addr.arpa

Dropped files

• C:\Users\analyst\AppData\Local\SumatraPDF\SumatraPDF-settings.txt - 8f359bd8ab718223a514f538b31ccc559414799bd50bb891d4933b9330d69c5e
• C:\Users\analyst\AppData\Local\SumatraPDF\sumatrapdfcache\fc036ecc49bdbe08b376f0a88d26d492.png - c9b53e81eff2d442b602194f80d2f369877ef11658c866495d0d5cc7a9008afb
• root_.cache_dconf_user - 96a296d224f285c67bee93c30f8a309157f0daa35dc5b87e410b78630a09cfc7

Embedded URLs

• https://netcdn.xyz/app/431946152/free-robux-generator-com-roblox-hack-game-hack
• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl

Embedded domains

• netcdn.xyz

Embedded IP addresses

• 57.154.63.210
• 52.148.114.188
• 172.172.255.216
• 40.84.85.40
• 52.110.12.56
• 20.165.94.46
• 57.155.104.224
• 4.230.171.124
• 20.76.201.171
• 74.178.240.61
• 135.232.92.97
• 52.123.128.14
• 20.165.94.63
• 135.232.92.137
• 162.159.36.2
• 203.26.79.13

Latest analyzed threats · ATT&CK coverage

Analyzed on MalwareAnalyzer by Cyble · Open interactive report