SUSPICIOUS — nimux.pdf
SUSPICIOUS — nimux.pdf is a pdf sample analyzed by MalwareAnalyzer by Cyble with a suspicious verdict (64/100). 2 of 53 detection engines flagged it, exhibiting 1 ATT&CK technique.
Identification
- SHA-256:
e7ebf34b1596d35ade65574f91b6e053397a7b73c776fc639541f92e7a6be044 - SHA-1:
6ca8cc47989c10f1728610dfac3d8de68f2a3e68 - MD5:
f6ab95e7051a03e13def4e922ab159a0 - ssdeep:
768:YgGzpD9ySybcmOT63HbgRs0DvZYro7kMd6WQp5am1tvo4+rWzILXpt+3tiY7S:1GFpx63HURs0VDAW81tz+rWzIH+3tiYW - TLSH:
T1FA32AEF3146BED893A83AB437CBB01592585D788723697A041D8776DC8BC2BCAF11C61 - Submitted as: nimux.pdf
- File type: pdf · Size: 46280 bytes
- Verdict: suspicious (64/100)
Detections (2 of 53 engines)
- MalwareAnalyser heuristics (entropy/packer): high-entropy-blob
- Emsisoft (Emergency Kit): PDF.Spam.Heur.1
MITRE ATT&CK
Why this verdict
The suspicious score of 64/100 is the fusion of 5 weighted signals:
- Contacted 21 external host(s) at runtime (8 HTTP) - network signal, weight 0.40, confidence 0.80
- Embedded network infrastructure: https://ggtraff.ru/strik?keyword=problemas+de+areas+y+perimetros+para+sexto+de+primaria, https://uploads.strikinglycdn.com/files/3b58535a-2ff6-4c3e-a821-f257ea80bd32/24777023819.pdf, https://uploads.strikinglycdn.com/files/294cf992-d814-479e-8555-b1c462bf714e/tozewexawitimisudebusasab.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 (10 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30
Dynamic analysis (windows)
9671 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
- c.pki.goog
- 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
- http://www.msftconnecttest.com/connecttest.txt
- http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
Dropped files
- C:\Users\analyst\AppData\Local\SumatraPDF\SumatraPDF-settings.txt -
165dde49c1dbeab86e5ccd39f2e610f3043165aebe875f4a2ae37a35138978ba - C:\Users\analyst\AppData\Local\SumatraPDF\sumatrapdfcache\b3acc5637f64f24930b0a5b5e57954d0.png -
9b6263d021b2eb0c34aedcdf67bdf57e06c02afdcfa8e4af495be10fd9283caf - root_.cache_dconf_user -
96a296d224f285c67bee93c30f8a309157f0daa35dc5b87e410b78630a09cfc7
Embedded URLs
- https://ggtraff.ru/strik?keyword=problemas+de+areas+y+perimetros+para+sexto+de+primaria
- https://uploads.strikinglycdn.com/files/3b58535a-2ff6-4c3e-a821-f257ea80bd32/24777023819.pdf
- https://uploads.strikinglycdn.com/files/294cf992-d814-479e-8555-b1c462bf714e/tozewexawitimisudebusasab.pdf
- https://uploads.strikinglycdn.com/files/04e1bd1d-c3d0-4241-94a5-bf31c7e21a66/vukitix.pdf
- https://uploads.strikinglycdn.com/files/49bcb5d7-6817-4cd5-9f4e-223ab0e6a171/86215531743.pdf
- https://uploads.strikinglycdn.com/files/cf51e8a3-b6ab-4c55-90c6-6dca0c84857b/41375218302.pdf
- https://cdn.shopify.com/s/files/1/0432/8993/6028/files/gulibinirepu.pdf
- https://uploads.strikinglycdn.com/files/97a157f7-9369-4c69-800d-6614283e4b79/75667051456.pdf
- https://uploads.strikinglycdn.com/files/e7b36f92-ca44-455a-9638-5cb6298f458d/pasogorevifusajubewatob.pdf
- https://uploads.strikinglycdn.com/files/a66cd883-0a23-4917-a74b-833527d1d70f/98072035676.pdf
- https://uploads.strikinglycdn.com/files/172a9156-9aa6-48ab-872e-6cf127d37e95/xawofoparawadoxonujaxo.pdf
- https://cdn.shopify.com/s/files/1/0500/4578/0118/files/xulexesemirixaluvaset.pdf
- https://cdn.shopify.com/s/files/1/0434/5066/3073/files/74999838158.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
- http://203.26.79.13/filestreamingservice/files/753bb2df-a166-494f-aa7d-5678b1ef0c56?P1=1787758737&P2=404&P3=2&P4=jnwmY4XkkvraX5Y%2bHryO8OVsNIKtN9e5M4d%2bqEa4PLb1bLJAz20mzbbKgJ47D1JMl50zV9LrR9%2bcJW%2b1pHGBCQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/c74a5353-3e6a-42b7-94d6-9b96c560c89a/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
Embedded domains
- ggtraff.ru
- uploads.strikinglycdn.com
- cdn.shopify.com
- www.w3.org
- purl.org
- ns.adobe.com
Embedded IP addresses
- 4.150.223.96
- 40.84.97.4
- 172.172.255.217
- 4.207.44.64
- 52.123.252.246
- 74.179.77.204
- 57.155.101.212
- 52.110.12.28
- 4.230.171.124
- 4.155.94.154
- 135.232.92.137
- 74.178.76.54
- 40.103.64.242
- 52.123.129.14
- 4.150.223.109
- 72.145.35.99
- 203.26.79.13
- 4.150.223.102
- 172.217.25.163
- 172.178.240.162
- 48.200.63.27
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Analyzed on MalwareAnalyzer by Cyble · Open interactive report