MALICIOUS — 66f5456ecabbd19dafd199a9fe0d5fd28f52da79e0ce76c6b89ee68b9a57f58c

MALICIOUS — 66f5456ecabbd19dafd199a9fe0d5fd28f52da79e0ce76c6b89ee68b9a57f58c is a pdf sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100). 4 of 54 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

• SHA-256: 66f5456ecabbd19dafd199a9fe0d5fd28f52da79e0ce76c6b89ee68b9a57f58c
• SHA-1: 6c40c3d0d73c0eccd1fa9315612bf3d007191608
• MD5: 85a907f6b75ec6ca7a0486b8eb4dad95
• ssdeep: 1536:pCoxkF5KEM0WxH7RR0lr+ZBoMknp6dL7Wu3NWCpOViMpWMQa:/kX5ifsgvknpKLfaViMpW8
• TLSH: T15437C0F7619BDC8C7B9BDF0378A6109DE085E3CC2271EA114584B66C94BC57DBE40960
• Submitted as: 66f5456ecabbd19dafd199a9fe0d5fd28f52da79e0ce76c6b89ee68b9a57f58c
• File type: pdf · Size: 73377 bytes
• Verdict: malicious (99/100)

Detections (4 of 54 engines)

• MalwareAnalyser heuristics (entropy/packer): high-entropy-blob
• ClamAV (daily): Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• Emsisoft (Emergency Kit): PDF.Spam.Heur.1
• Kaspersky (KVRT): HEUR:Hoax.PDF.Phish.gen

MITRE ATT&CK

• T1105
• T1566.002

Why this verdict

The malicious score of 99/100 is the fusion of 10 weighted signals:

• ClamAV (daily) flagged Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 (rule Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0) - engine signal, weight 0.90, confidence 0.95
• Embedded link rated malicious by URL analysis: http://szyoujin.com/UploadFile/file/20210925164652843.pdf - network signal, weight 0.70, confidence 0.80
• Emsisoft (Emergency Kit) flagged PDF.Spam.Heur.1 (rule PDF.Spam.Heur.1) - engine signal, weight 0.55, confidence 0.85
• Kaspersky (KVRT) flagged HEUR:Hoax.PDF.Phish.gen (rule HEUR:Hoax.PDF.Phish.gen) - engine signal, weight 0.55, confidence 0.85
• MalwareAnalyser heuristics (entropy/packer) flagged high-entropy-blob (rule high-entropy-blob) - engine signal, weight 0.35, confidence 0.70
• Embedded network infrastructure: http://gangwonbnb.com/FileData/ckfinder/files/20210923_DF7A9A44158A5145.pdf, http://ibconsulting.it/userfiles/files/8120171397.pdf, http://bjhtdszdh.com/v15/Upload/file/20219301734339855.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
• Contacted 4 external host(s) at runtime - network signal, weight 0.12, confidence 0.55
• Extracted generic config (19 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30

Dynamic analysis (windows)

978 behavior events · 0 ATT&CK techniques · 1 dropped files.

Runtime network

• www.msftconnecttest.com
• rb.symcd.com
• rb.symcb.com
• inference.location.live.net
• ntp.ubuntu.com
• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl
• 23.40.52.85
• 23.11.37.157
• 20.190.167.149
• 20.247.185.124 SG · Singapore · AS8075 Microsoft Corporation
• 23.33.238.135
• 23.198.40.44
• 4.230.171.124 KR · Seoul · AS8075 Microsoft Corporation
• 23.33.238.174
• 23.33.238.112
• 192.168.122.108
• 150.171.28.11
• 85.210.196.11 GB · London · AS8075 Microsoft Limited

Dropped files

• root_.cache_dconf_user - 96a296d224f285c67bee93c30f8a309157f0daa35dc5b87e410b78630a09cfc7

Embedded URLs

• https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=associates+and+joint+ventures
• http://gangwonbnb.com/FileData/ckfinder/files/20210923_DF7A9A44158A5145.pdf
• http://ibconsulting.it/userfiles/files/8120171397.pdf
• http://bjhtdszdh.com/v15/Upload/file/20219301734339855.pdf
• http://www.schule.havonix.com/ckfinder/userfiles/files/23610159396.pdf
• https://vanphongphampmc.com/upload/files/rojomodusufigafozejijepuj.pdf
• http://kleinschaden-expert.de/userfiles/file/20681757165.pdf
• https://www.tzounakos-insurance.gr/ckfinder/userfiles/files/68323694542.pdf
• http://szyoujin.com/UploadFile/file/20210925164652843.pdf
• http://www.fashiongale.ro/userfiles/files/14493343705.pdf
• http://helloslow.com/data/userfiles/files/32039580102.pdf
• http://exito-opakowania.pl/userfiles/file/gigudupiwenaresolalagipum.pdf
• https://mitrasuksesku.com/userfiles/file/zasosuvapewosegiwe.pdf
• http://www.bash.cl/media/file/paderiretokofalixape.pdf
• http://ricettebiagi.it/uploads/assets/file/89047340825.pdf
• http://wordtmann.beckbauer.eu/ckfinder/userfiles/files/65206352217.pdf
• http://www.smwiarus.pl/ckfinder/userfiles/files/bemedokifajowi.pdf
• http://panhongbo.com/ckfinder/userfiles/site_eachfun_com/files/36175259067.pdf
• http://tscyw.net/userfiles/file/20210912204437_svrpiw.pdf
• http://goldmustang.com/files/files/77212334338.pdf
• http://monteconsultants.com/image/upload/File/31253034581.pdf
• https://rawoctane.com/uploads/file/42497785476.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/

Embedded domains

• feedproxy.google.com
• gangwonbnb.com
• ibconsulting.it
• bjhtdszdh.com
• www.schule.havonix.com
• vanphongphampmc.com
• kleinschaden-expert.de
• szyoujin.com
• helloslow.com
• exito-opakowania.pl
• mitrasuksesku.com
• ricettebiagi.it
• wordtmann.beckbauer.eu
• www.smwiarus.pl
• panhongbo.com
• tscyw.net
• goldmustang.com
• monteconsultants.com
• rawoctane.com
• www.w3.org
• purl.org
• ns.adobe.com
• www.tzounakos-insurance.gr
• www.fashiongale.ro
• www.bash.cl

Embedded IP addresses

• 20.184.175.8
• 20.247.185.124
• 4.230.171.124
• 85.210.196.11

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report