MALICIOUS — normal_5fa3d9f647e57.pdf

MALICIOUS — normal_5fa3d9f647e57.pdf is a pdf sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (72/100). 3 of 53 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

• SHA-256: 9f5df3e887b845dad9ca82df457a74832f4e81b844f40af30a8dc1d2d73133b7
• SHA-1: c6501a56c054410da28ead38ba77d426909b6f7d
• MD5: 2b547cdf83bfed32aaf3ab65ef010f05
• ssdeep: 768:dgGzpDZKAHWye5EaXMxcWo/OfIbxXslNO5f0WD2fjIcP+2rOvP:eGFlpg3c2WwbxXsfO5fFD2fpTrOvP
• TLSH: T15A338CF744ABDC9C7686AB036AEB10A97047D78D3072AB6014DC7B6CC4782BD6D409A1
• Submitted as: normal_5fa3d9f647e57.pdf
• File type: pdf · Size: 49050 bytes
• Verdict: malicious (72/100)

Detections (3 of 53 engines)

• MalwareAnalyser heuristics (entropy/packer): high-entropy-blob
• Emsisoft (Emergency Kit): PDF.Spam.Heur.1
• Kaspersky (KVRT): HEUR:Trojan.Script.Generic

MITRE ATT&CK

• T1105
• T1566.002

Why this verdict

The malicious score of 72/100 is the fusion of 6 weighted signals:

• Contacted 17 external host(s) at runtime (8 HTTP) - network signal, weight 0.40, confidence 0.80
• Embedded link rated suspicious by URL analysis: https://uploads.strikinglycdn.com/files/8094a0f7-af92-4b4b-ac5a-d9447eada71c/numunuxupuwevotunig.pdf - network signal, weight 0.40, confidence 0.60
• Embedded network infrastructure: https://cctraff.ru/123?keyword=positive+words+beginning+with+the+letter+z, https://pajodutakimileg.weebly.com/uploads/1/3/4/4/134474341/femofinumojeruzez.pdf, https://uploads.strikinglycdn.com/files/8094a0f7-af92-4b4b-ac5a-d9447eada71c/numunuxupuwevotunig.pdf - 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
• Extracted generic config (7 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30

Dynamic analysis (windows)

9794 behavior events · 0 ATT&CK techniques · 3 dropped files.

Runtime network

• www.msftconnecttest.com
• rb.symcd.com
• rb.symcb.com
• inference.location.live.net
• to-do.office.com
• staging.to-do.officeppe.com
• teams.cloud.microsoft
• outlook.office.com
• outlook.office365.com
• outlook.cloud.microsoft
• 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
• 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
• 252.0.0.224.in-addr.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
• 250.255.255.239.in-addr.arpa
• desktop-hsgcbep
• ntp.ubuntu.com
• 79.243.254.169.in-addr.arpa
• 255.255.254.169.in-addr.arpa
• http://www.msftconnecttest.com/connecttest.txt

Dropped files

• C:\Users\analyst\AppData\Local\SumatraPDF\sumatrapdfcache\297cc3836abb1dfd762fa7d45caad9c9.png - 6a405eee83a3b1db4ffa1845ed4d3cc2adff0c3a0ef173b2d795b1cbfc62bb5a
• C:\Users\analyst\AppData\Local\SumatraPDF\SumatraPDF-settings.txt - 115bfd28ba40b044b92f56708d68202ba9f9e588091ace68fb282cd37d6e365d
• root_.cache_dconf_user - 96a296d224f285c67bee93c30f8a309157f0daa35dc5b87e410b78630a09cfc7

Embedded URLs

• https://cctraff.ru/123?keyword=positive+words+beginning+with+the+letter+z
• https://pajodutakimileg.weebly.com/uploads/1/3/4/4/134474341/femofinumojeruzez.pdf
• https://uploads.strikinglycdn.com/files/8094a0f7-af92-4b4b-ac5a-d9447eada71c/numunuxupuwevotunig.pdf
• https://uploads.strikinglycdn.com/files/fdb66950-31f9-45ab-ad20-174a1325f90f/62160048031.pdf
• https://cdn-cms.f-static.net/uploads/4369336/normal_5f9893779b57f.pdf
• https://s3.amazonaws.com/xamibudasagas/36021479279.pdf
• https://s3.amazonaws.com/wovitiku/ryobi_black_friday_deals.pdf
• https://winugemu.weebly.com/uploads/1/3/1/0/131070294/dimisapanerox-fadag-kozidoriv-juwajenu.pdf
• https://uploads.strikinglycdn.com/files/99bfb0ec-96f3-4482-9bfa-47b43f4f59c1/47560541681.pdf
• https://s3.amazonaws.com/sivanira/kutifilojixomok.pdf
• https://uploads.strikinglycdn.com/files/e3624c55-3389-4b5d-951e-25c48fded9af/feligolatulewasoteruni.pdf
• https://naroxelilokatud.weebly.com/uploads/1/3/1/3/131384214/larinufuzexamatiju.pdf
• https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/metor.pdf
• https://nunezexivu.weebly.com/uploads/1/3/4/4/134440215/75ac897f1fb82.pdf
• https://uploads.strikinglycdn.com/files/c8fdf0bb-b5d9-44d3-ab5c-1ffd0e61e6a9/12056292045.pdf
• http://www.w3.org/1999/02/22-rdf-syntax-ns#
• http://purl.org/dc/elements/1.1/
• http://ns.adobe.com/pdf/1.3/
• http://ns.adobe.com/xap/1.0/
• http://ns.adobe.com/xap/1.0/mm/
• http://ns.adobe.com/xap/1.0/rights/
• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl
• http://203.26.79.13/filestreamingservice//files/753bb2df-a166-494f-aa7d-5678b1ef0c56/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com

Embedded domains

• cctraff.ru
• pajodutakimileg.weebly.com
• uploads.strikinglycdn.com
• cdn-cms.f-static.net
• s3.amazonaws.com
• winugemu.weebly.com
• naroxelilokatud.weebly.com
• zoxuzuxebexot.weebly.com
• nunezexivu.weebly.com
• www.w3.org
• purl.org
• ns.adobe.com

Embedded IP addresses

• 72.154.7.100
• 40.79.141.153
• 172.215.188.225
• 4.144.132.223
• 4.230.171.124
• 135.232.92.137
• 20.76.201.171
• 52.123.128.14
• 40.99.133.226
• 92.223.78.30
• 20.165.94.46
• 203.26.79.13
• 4.150.223.96
• 135.233.45.223
• 172.175.111.170
• 20.42.65.93
• 142.250.195.163

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report