MALICIOUS — c2b64.pdf
MALICIOUS — c2b64.pdf is a pdf sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (93/100). 3 of 50 detection engines flagged it, exhibiting 3 ATT&CK techniques.
Identification
- SHA-256:
0bf99f4eace63b7c5e4ca5abb7a3aaee54e24aa79d70869a8692fec76593cea2 - SHA-1:
4c609ea7ae6513cd8d1092b02c5ccb1188df9bad - MD5:
ee56ff9c57a4e2742e62b9ae6be2df5a - ssdeep:
768:/gGzpDcpwkmqQ9VxWURFB0PfggCnm2UMyKB1u+ToLkWkP:IGFYpUWoFBuHC0My816kWkP - TLSH:
T1C8317DF32097EC4C3A8A6B53AEA7149D508AD7896132A7A054CC773DC4BC9FC6F10A51 - Submitted as: c2b64.pdf
- File type: pdf · Size: 41282 bytes
- Verdict: malicious (93/100)
Detections (3 of 50 engines)
- MalwareAnalyser heuristics (entropy/packer): high-entropy-blob
- Kaspersky (KVRT): UDS:Trojan.PDF.SBadur.gen
- Emsisoft (Emergency Kit): PDF.Spam.Heur.1
MITRE ATT&CK
Why this verdict
The malicious score of 93/100 is the fusion of 8 weighted signals:
- Dropped a malicious payload (Lazarus): root_.cache_dconf_user - dynamic signal, weight 0.80, confidence 0.90
- Contacted 28 external host(s) at runtime (7 HTTP) - network signal, weight 0.40, confidence 0.80
- Embedded link rated suspicious by URL analysis: https://uploads.strikinglycdn.com/files/1f9f53eb-73ab-4c56-b84d-9de394d264c6/xifibetarowapik.pdf - network signal, weight 0.40, confidence 0.60
- Embedded network infrastructure: https://cctraff.ru/wb?keyword=think%20sheet%20upper%20elementary, https://uploads.strikinglycdn.com/files/1f9f53eb-73ab-4c56-b84d-9de394d264c6/xifibetarowapik.pdf, https://uploads.strikinglycdn.com/files/0d36c034-0f69-42d3-9e6f-b91e790fa683/xarumipevepalowififuni.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
- Observed at runtime: Modify Registry (T1112) (rule
Modify Registry) - dynamic signal, weight 0.12, confidence 0.90 - Extracted generic config (19 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30
Dynamic analysis (windows)
9759 behavior events · 1 ATT&CK techniques · 4 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
- 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/2cbcf400-ac8d-4d86-9d69-c7f0dff56d2e/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/2cbcf400-ac8d-4d86-9d69-c7f0dff56d2e?P1=1787101667&P2=404&P3=2&P4=aJ4TBH8aeDQvoZNb21BtydH6lIyBeNYseYCjcwvkngUndKwsBT8sQ6yLqd9%2fsdT5ATY%2baoRvWh2FJNreBKFDQQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/58b2a9b1-8570-476c-a7c2-f7ab0a20fbf9/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/58b2a9b1-8570-476c-a7c2-f7ab0a20fbf9?P1=1787101708&P2=404&P3=2&P4=X0DmlhZ5yzFUA6p6b4sVHYBA16gJLc7tClMLaAW5UAQkqidoIhtpet4R91LmgiQSK%2fySyNxGq4zeBSbnSRbR1w%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- 23.40.52.209
- 23.11.37.157
- 20.190.142.164
Dropped files
- /opt/CAPEv2/storage/analyses/31015/files/526a0fe10e4de4fca268ad6b182ac7c8c7a8fddcf71b5bdc9ad84b443a1db11f -
526a0fe10e4de4fca268ad6b182ac7c8c7a8fddcf71b5bdc9ad84b443a1db11f - /opt/CAPEv2/storage/analyses/31015/files/207f8a9906e1cc6cb125e2b62ba92fcda73fde980fffa9f62ddbd8fee9665097 -
207f8a9906e1cc6cb125e2b62ba92fcda73fde980fffa9f62ddbd8fee9665097 - root_.cache_dconf_user -
96a296d224f285c67bee93c30f8a309157f0daa35dc5b87e410b78630a09cfc7 - tmp_tmp.zwmfWgqqET -
116f77a90839288201f84b7b4dfbdd3e42a0e4aee964cb81fae5f81eae610904
Embedded URLs
- https://cctraff.ru/wb?keyword=think%20sheet%20upper%20elementary
- https://uploads.strikinglycdn.com/files/1f9f53eb-73ab-4c56-b84d-9de394d264c6/xifibetarowapik.pdf
- https://uploads.strikinglycdn.com/files/0d36c034-0f69-42d3-9e6f-b91e790fa683/xarumipevepalowififuni.pdf
- https://uploads.strikinglycdn.com/files/15861ae4-4d68-4c78-9f46-0cc28bd1694b/3106962161.pdf
- https://uploads.strikinglycdn.com/files/85be8848-2e9b-4035-8a17-b28b30e1c631/xelujalidigitugipezakigi.pdf
- https://uploads.strikinglycdn.com/files/dff6650b-bd0c-452e-a9dc-1b348ef8109c/76173089625.pdf
- https://cdn-cms.f-static.net/uploads/4366359/normal_5f872d43ef121.pdf
- https://site-1044161.mozfiles.com/files/1044161/butedewo.pdf
- https://site-1043559.mozfiles.com/files/1043559/62291358911.pdf
- https://vibebivenef.weebly.com/uploads/1/3/1/4/131412032/254530.pdf
- https://xumogimunosu.weebly.com/uploads/1/3/1/6/131607683/dc69227.pdf
- https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/4045700.pdf
- https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/8d113dbc76e.pdf
- https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/tiladejonu.pdf
- https://tajurasexir.weebly.com/uploads/1/3/1/6/131606020/6897437.pdf
- https://nogafuku.weebly.com/uploads/1/3/2/8/132815296/5987814.pdf
- https://cdn-cms.f-static.net/uploads/4365545/normal_5f87165a6f838.pdf
- https://cdn-cms.f-static.net/uploads/4366377/normal_5f870e0dd173b.pdf
- https://cdn-cms.f-static.net/uploads/4365525/normal_5f870bbc02871.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/
Embedded domains
- cctraff.ru
- uploads.strikinglycdn.com
- cdn-cms.f-static.net
- site-1044161.mozfiles.com
- site-1043559.mozfiles.com
- vibebivenef.weebly.com
- xumogimunosu.weebly.com
- zoxuzuxebexot.weebly.com
- babikovinemixe.weebly.com
- guwomenod.weebly.com
- tajurasexir.weebly.com
- nogafuku.weebly.com
- www.w3.org
- purl.org
- ns.adobe.com
Embedded IP addresses
- 52.123.252.212
- 57.155.104.224
- 52.110.12.26
- 20.247.184.197
- 4.230.171.124
- 74.179.77.204
- 52.178.17.3
- 52.123.128.14
- 72.154.7.97
- 203.26.79.13
- 74.178.232.29
- 48.199.12.1
- 52.148.114.188
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Analyzed on MalwareAnalyzer by Cyble · Open interactive report