SUSPICIOUS — nukobabuzuk.pdf
SUSPICIOUS — nukobabuzuk.pdf is a pdf sample analyzed by MalwareAnalyzer by Cyble with a suspicious verdict (64/100). 3 of 53 detection engines flagged it.
Identification
- SHA-256:
d33a6c380e60a2498def3d06376d6762bd9337ca5c43107172157d6ba1b9409c - SHA-1:
9ee9833ec11620ffbb1b9a1c17085232ef5b3f66 - MD5:
e4be60ef995097f960c99dbf408a8e38 - ssdeep:
768:LK1gGzpD8b+fesz9Tb1C4sQCRKLni16c5VjT/GGi2lIDlbXys6mEGbSxrC:FGFob+m69Tb1C4dCKVc5VjT/XlIRWs6+ - TLSH:
T1D1329EF3947BFD9D2586AB076EE71059610AE24C603296B095C8BBBCC0B87BD3F00955 - Submitted as: nukobabuzuk.pdf
- File type: pdf · Size: 47211 bytes
- Verdict: suspicious (64/100)
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
Why this verdict
The suspicious score of 64/100 is the fusion of 5 weighted signals:
- Contacted 28 external host(s) at runtime (30 HTTP) - network signal, weight 0.40, confidence 0.80
- Embedded network infrastructure: https://ggtraff.ru/strik?keyword=automate+the+boring+stuff+with+python+second+edition+pdf, http://buseb.neupexcompany.com/uploads/1/3/2/6/132681556/365626.pdf, http://files.monacof1grandprix.com/uploads/1/3/1/3/131383475/pamakesa.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 (11 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30
Dynamic analysis (windows)
8694 behavior events · 0 ATT&CK techniques · 2 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
- ctldl.windowsupdate.com
- login.live.com
- ocsp.digicert.com
- desktop-hsgcbep
- v20.events.data.microsoft.com
- config.edge.skype.com
- windows.msn.com
- oneocsp.microsoft.com
- www.msn.com
Dropped files
- C:\Users\analyst\AppData\Local\SumatraPDF\sumatrapdfcache\8f34300c088f1e957232af94d78a0f3c.png -
ba37ae85813f3541650f40500fc1e39e9f38e3ee4180f79796e76ee04d73944d - C:\Users\analyst\AppData\Local\SumatraPDF\SumatraPDF-settings.txt -
9e52fc9013e1745bccdf54c425fcd7c59bcb6d339ac66b8e0fc0bf9466668f57
Embedded URLs
- https://ggtraff.ru/strik?keyword=automate+the+boring+stuff+with+python+second+edition+pdf
- http://buseb.neupexcompany.com/uploads/1/3/2/6/132681556/365626.pdf
- http://files.monacof1grandprix.com/uploads/1/3/1/3/131383475/pamakesa.pdf
- http://files.continentaldrifter.net/uploads/1/3/1/4/131407194/bixisakomezuzu_manujosit.pdf
- https://site-1036862.mozfiles.com/files/1036862/82779819621.pdf
- https://site-1039163.mozfiles.com/files/1039163/pesix.pdf
- https://site-1037071.mozfiles.com/files/1037071/34155111052.pdf
- https://site-1039727.mozfiles.com/files/1039727/nozupodabag.pdf
- https://site-1038522.mozfiles.com/files/1038522/52266349983.pdf
- https://site-1036678.mozfiles.com/files/1036678/43645166961.pdf
- https://site-1037191.mozfiles.com/files/1037191/73075873837.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=1787761052&P2=404&P3=2&P4=aJrkT2ykzRwColuntKmpcNY2Ddh%2ffapMzKsvXMVJrPB2vTEkAu89lGW%2bFlI8SdDmGTAtLgxBrwtBiKwnNVKelg%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
- http://203.26.79.13/filestreamingservice/files/c74a5353-3e6a-42b7-94d6-9b96c560c89a?P1=1787761077&P2=404&P3=2&P4=a%2bgPdDmEHYrouDMl0KupLgQ0HNNMdGzlGQ3VysqEatQS9pk4idhB%2fj5%2bViy%2bSTyaN%2b2jqnNie%2fiVkAx86kn84A%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://c.pki.goog/r/gsr1.crl
Embedded domains
- ggtraff.ru
- buseb.neupexcompany.com
- files.monacof1grandprix.com
- files.continentaldrifter.net
- site-1036862.mozfiles.com
- site-1039163.mozfiles.com
- site-1037071.mozfiles.com
- site-1039727.mozfiles.com
- site-1038522.mozfiles.com
- site-1036678.mozfiles.com
- site-1037191.mozfiles.com
- www.w3.org
- purl.org
- ns.adobe.com
Embedded IP addresses
- 203.26.79.13
- 92.223.78.30
- 51.105.71.136
- 20.42.179.192
- 52.253.84.76
- 4.230.171.124
- 135.233.95.144
- 135.233.95.135
- 52.123.252.192
- 20.165.94.46
- 20.50.201.200
- 52.123.252.235
- 52.123.252.234
- 40.99.133.226
- 20.76.201.171
- 52.123.128.14
- 40.99.133.242
- 52.123.129.14
- 52.123.252.242
- 135.233.45.222
- 52.148.114.188
- 72.153.5.134
- 135.234.160.244
- 4.209.250.170
- 20.184.175.8
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Analyzed on MalwareAnalyzer by Cyble · Open interactive report