MALICIOUS — kefujon.pdf
MALICIOUS — kefujon.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:
646843769739e4e39964743783728034c56ae5031cfc047cf92c979dc42651b5 - SHA-1:
b4f87c9f68956405874ad6bcfa91e644612e7000 - MD5:
fe65299e2ed4f03da91b2a713ae2f7b8 - ssdeep:
1536:1GFpv/5wszZto2pnkURDaGrIG2GrOzqpxizEd:IFp3XZeGkURfszGrbia - TLSH:
T18433BEF341A7ED4C6A876B435EEB10599406878C707AAB5014CC376CC8BC7EDAF14A62 - Submitted as: kefujon.pdf
- File type: pdf · Size: 50707 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
Why this verdict
The malicious score of 72/100 is the fusion of 6 weighted signals:
- Contacted 16 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/b1b9c829-0bf6-4cde-ad1f-6d740ce4f560/58317285052.pdf - network signal, weight 0.40, confidence 0.60
- Embedded network infrastructure: https://cctraff.ru/strik?keyword=sheet+metal+bending+machine+design+pdf, https://cdn.shopify.com/s/files/1/0435/8832/1437/files/arabic_dictionary_download.pdf, https://cdn.shopify.com/s/files/1/0432/7846/7222/files/11084013043.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 (12 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30
Dynamic analysis (windows)
9720 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
- ntp.ubuntu.com
- _dosvc._tcp.local
- 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=1787778198&P2=404&P3=2&P4=S7TfhPdD%2f00Pm6KfWNt%2bqbNHby28i9VjCR75G00oGD4nlQQCbmVkuxzdef%2bYWHobmMQW1gb5aoADXVipe7UNuA%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=1787778237&P2=404&P3=2&P4=jkxMs9Dp08BmISvNDkQlxocxnEGc1DahLJaA0FQZ%2biYQRqcyKR45oPIijpr8ZLR4xStEPMXjsoPBFxxXb2OMRg%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/9c0462dd-f6cd-4ff7-a7ac-708d0e9dadc5/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
Dropped files
- C:\Users\analyst\AppData\Local\SumatraPDF\SumatraPDF-settings.txt -
f98e38848e2f5ea3be2a8c14b466f332b942f6f22955c92eef558c08e8d93f9a - C:\Users\analyst\AppData\Local\SumatraPDF\sumatrapdfcache\792b684a40f3fbd68dab734abf44fdcc.png -
4e6c0852cb9497aca6fc3f91064aa130077060f3d4d31ccc3d1c5b83555c33a5 - root_.cache_dconf_user -
96a296d224f285c67bee93c30f8a309157f0daa35dc5b87e410b78630a09cfc7
Embedded URLs
- https://cctraff.ru/strik?keyword=sheet+metal+bending+machine+design+pdf
- https://cdn.shopify.com/s/files/1/0435/8832/1437/files/arabic_dictionary_download.pdf
- https://cdn.shopify.com/s/files/1/0432/7846/7222/files/11084013043.pdf
- https://cdn.shopify.com/s/files/1/0484/8481/0907/files/principles_of_business_forecasting_keith_ord.pdf
- http://gigifeno.skintwalletsusa.com/uploads/1/3/1/4/131410872/vedazirovib.pdf
- http://files.rvmaverick.com/uploads/1/3/1/4/131437728/jafotosi-guritebob-mozanomili-bixilemejipakem.pdf
- http://files.kingdomofhindh.com/uploads/1/3/1/4/131437385/vodapoxi.pdf
- http://files.artspeaks.net/uploads/1/3/0/7/130740242/fazafopavote.pdf
- http://files.musicfromthewestcoast.com/uploads/1/3/1/3/131398182/lakelulekaxotuv.pdf
- https://uploads.strikinglycdn.com/files/b1b9c829-0bf6-4cde-ad1f-6d740ce4f560/58317285052.pdf
- https://uploads.strikinglycdn.com/files/ba7a999d-36c6-450a-bfe0-a53f601cf470/61966569193.pdf
- https://site-1036960.mozfiles.com/files/1036960/polalenijo.pdf
- https://site-1037028.mozfiles.com/files/1037028/zupodevimavavifejogu.pdf
- https://site-1037124.mozfiles.com/files/1037124/kajewitewafajominepozona.pdf
- https://site-1039513.mozfiles.com/files/1039513/97993116552.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
- cdn.shopify.com
- gigifeno.skintwalletsusa.com
- files.rvmaverick.com
- files.kingdomofhindh.com
- files.artspeaks.net
- files.musicfromthewestcoast.com
- uploads.strikinglycdn.com
- site-1036960.mozfiles.com
- site-1037028.mozfiles.com
- site-1037124.mozfiles.com
- site-1039513.mozfiles.com
- www.w3.org
- purl.org
- ns.adobe.com
Embedded IP addresses
- 72.153.5.139
- 57.154.63.210
- 52.123.252.222
- 52.110.12.48
- 4.230.171.124
- 20.247.184.197
- 40.84.85.40
- 74.178.240.51
- 74.179.77.204
- 52.123.128.14
- 20.42.65.85
- 74.179.71.159
- 203.26.79.13
- 20.50.201.201
- 48.192.143.121
- 4.207.44.77
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Analyzed on MalwareAnalyzer by Cyble · Open interactive report