MALICIOUS — 5548704.pdf
MALICIOUS — 5548704.pdf is a pdf sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (89/100), attributed to the REvil family. 3 of 50 detection engines flagged it, exhibiting 3 ATT&CK techniques.
Identification
- SHA-256:
b833e2608be946b83f5f4449fe25f898078e47440959eb54b513f1a390d401ac - SHA-1:
3b50183f19e1ad70d4093bb03dde5f1632cadbfb - MD5:
a8526fd5aeebeef9798a40b61efd9e62 - ssdeep:
768:vgGzpD4pDvdVQP79ZMuak18qa8HQn1lGy5FKM7el8L4jUTb9qy/Bsve:YGFMpDpkM8Hej5Ff/L4jEb9qy/Bsve - TLSH:
T109339EF35097EC4C7E8B8B039DAB146A5189D38C613B9760548C77ACD4BCAAE3E11921 - Submitted as: 5548704.pdf
- File type: pdf · Size: 49094 bytes
- Verdict: malicious (89/100) · Family: REvil
Detections (3 of 50 engines)
- MalwareAnalyser heuristics (entropy/packer): high-entropy-blob
- YARA: Trellix/McAfee ATR: ATR_REvil_Sodinokibi
- Emsisoft (Emergency Kit): PDF.Spam.Heur.1
MITRE ATT&CK
Why this verdict
The malicious score of 89/100 is the fusion of 8 weighted signals:
- Embedded link rated malicious by URL analysis: https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/8256202.pdf - network signal, weight 0.70, confidence 0.80
- Contacted 17 external host(s) at runtime (3 HTTP) - network signal, weight 0.40, confidence 0.80
- YARA: Trellix/McAfee ATR flagged ATR_REvil_Sodinokibi (rule
ATR_REvil_Sodinokibi) - engine signal, weight 0.35, confidence 0.70 - Embedded network infrastructure: https://gettraff.ru/wb?keyword=insert%20pdf%20file%20in%20word%20document, https://uploads.strikinglycdn.com/files/290a55eb-3f2b-422f-9e26-a91c48b4f32b/51771788373.pdf, https://uploads.strikinglycdn.com/files/d5ed65af-dc9b-4b8d-98d3-22e47c88f17b/corpsebloom_risk_of_rain_2.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 (16 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30
Dynamic analysis (windows)
9700 behavior events · 1 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
- 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
- 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
- 250.255.255.239.in-addr.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
- desktop-hsgcbep
- 255.255.254.169.in-addr.arpa
- desktop-hsgcbep._dosvc._tcp.local
- desktop-hsgcbep(1)._dosvc._tcp.local
- desktop-hsgcbep(2)._dosvc._tcp.local
Dropped files
- C:\Users\analyst\AppData\Local\SumatraPDF\SumatraPDF-settings.txt -
09c21f856716879bceba6fe974b3cb6d413d87db2c7f59623c0614c1827db67f - C:\Users\analyst\AppData\Local\SumatraPDF\sumatrapdfcache\aeb3bb9b12d110b106856bd164ea02af.png -
4aae4acb81fec3b7c35def669c55e6fcf8b6591155729b2ed0f4cde839e89957 - root_.cache_dconf_user -
96a296d224f285c67bee93c30f8a309157f0daa35dc5b87e410b78630a09cfc7
Embedded URLs
- https://gettraff.ru/wb?keyword=insert%20pdf%20file%20in%20word%20document
- https://uploads.strikinglycdn.com/files/290a55eb-3f2b-422f-9e26-a91c48b4f32b/51771788373.pdf
- https://uploads.strikinglycdn.com/files/d5ed65af-dc9b-4b8d-98d3-22e47c88f17b/corpsebloom_risk_of_rain_2.pdf
- https://uploads.strikinglycdn.com/files/314ffbe5-6531-46a0-9348-68d60467f1ae/breville_avance_toaster_manual.pdf
- https://uploads.strikinglycdn.com/files/aad88d29-e7cb-49b3-8f2f-64dacb9291fc/tuxotumemudibokapilaxu.pdf
- https://uploads.strikinglycdn.com/files/33d51f70-f490-4933-b795-d9332b861b66/bakibubonezozilefoxog.pdf
- https://uploads.strikinglycdn.com/files/2e8c1687-702e-4eda-a95b-f23fda7b47d4/rezel.pdf
- https://uploads.strikinglycdn.com/files/ffe92411-bc2c-43b0-acb0-d4d86c355fec/31208668684.pdf
- https://uploads.strikinglycdn.com/files/6a01c8d3-af32-419b-b34a-70b823711b90/14861713565.pdf
- https://rabifupokuwu.weebly.com/uploads/1/3/1/1/131164250/8256202.pdf
- https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/a2bf9e7b5b332.pdf
- https://luwobidope.weebly.com/uploads/1/3/0/8/130814225/luxisetajezew.pdf
- https://cdn.shopify.com/s/files/1/0484/4299/8938/files/facebook_running_slow_on_mac.pdf
- https://cdn.shopify.com/s/files/1/0498/2358/0322/files/60053144201.pdf
- https://cdn.shopify.com/s/files/1/0434/7074/9856/files/cistocele_grado_ii.pdf
- https://cdn.shopify.com/s/files/1/0503/2719/1715/files/truyn_tranh_online_apk.pdf
- https://s3.amazonaws.com/vibuvomomuv/contemporary_approaches_to_artificial_general_intelligence.pdf
- https://s3.amazonaws.com/lunojol/catalaunian_fields_osprey.pdf
- https://s3.amazonaws.com/zuxadol/ditetofavixamakipajowoso.pdf
- https://s3.amazonaws.com/widuxade/ritazofubuwibe.pdf
- https://s3.amazonaws.com/zetare/biosistematica_definicion.pdf
- https://s3.amazonaws.com/subud/allegro_cadence.pdf
- https://s3.amazonaws.com/tadovu/az_203_exam_dumps.pdf
- https://s3.amazonaws.com/tadovu/bumofofazezebax.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
Embedded domains
- gettraff.ru
- uploads.strikinglycdn.com
- rabifupokuwu.weebly.com
- bibeliki.weebly.com
- luwobidope.weebly.com
- cdn.shopify.com
- s3.amazonaws.com
- www.w3.org
- purl.org
- ns.adobe.com
Embedded IP addresses
- 135.232.92.137
- 162.159.142.9
- 20.184.175.0
- 52.110.12.4
- 52.110.12.45
- 4.144.132.223
- 4.230.171.124
- 57.155.104.224
- 135.232.92.34
- 74.178.76.128
- 203.26.79.13
- 20.165.94.54
- 40.103.64.226
- 52.123.129.14
- 40.99.133.242
- 92.223.78.30
- 172.215.188.225
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Analyzed on MalwareAnalyzer by Cyble · Open interactive report