SUSPICIOUS — 21257096665.pdf
SUSPICIOUS — 21257096665.pdf is a pdf sample analyzed by MalwareAnalyzer by Cyble with a suspicious verdict (56/100). 3 of 50 detection engines flagged it, exhibiting 2 ATT&CK techniques.
Identification
- SHA-256:
994e8b2bb07127249eaf52ba0016ef567189b2633f949f3cdbe7aa30ce0a403d - SHA-1:
ca43d12c4d88d9231519860532063ec479ed1995 - MD5:
401736d4678752dae1e2288f4963aa96 - ssdeep:
768:mgGzpDALqeKMThO4MyOm7kKjN4lvZULHFsoUL6raasQhcDIVv:zGFEj8bKjNQa7FY6rSQhcMVv - TLSH:
T180319EF340A7EE8C7AC6AB03ADDA1499A049D7886132A77485987B7CC07C3BD7F41910 - Submitted as: 21257096665.pdf
- File type: pdf · Size: 42803 bytes
- Verdict: suspicious (56/100)
Detections (3 of 50 engines)
- MalwareAnalyser heuristics (entropy/packer): high-entropy-blob
- Microsoft Defender: flagged
- Emsisoft (Emergency Kit): PDF.Spam.Heur.1
MITRE ATT&CK
Why this verdict
The suspicious score of 56/100 is the fusion of 6 weighted signals:
- Embedded network infrastructure: https://ggtraff.ru/strik?keyword=factoring+polynomials+practice+worksheet+with+answers, https://site-1036633.mozfiles.com/files/1036633/jofumof.pdf, https://site-1038586.mozfiles.com/files/1038586/wugefunujowifiluxula.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 - Contacted 12 external host(s) at runtime - network signal, weight 0.12, confidence 0.55
- Extracted generic config (17 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30
Dynamic analysis (windows)
9653 behavior events · 1 ATT&CK techniques · 3 dropped files.
Runtime network
- www.msftconnecttest.com
- rb.symcd.com
- rb.symcb.com
- inference.location.live.net
- searchapp.bundleassets.example
- to-do.office.com
- staging.to-do.officeppe.com
- teams.cloud.microsoft
- outlook.office.com
- outlook.office365.com
- outlook.cloud.microsoft
- 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
- 252.0.0.224.in-addr.arpa
- desktop-hsgcbep
- 250.255.255.239.in-addr.arpa
- 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
- 79.243.254.169.in-addr.arpa
- 255.255.254.169.in-addr.arpa
- ntp.ubuntu.com
Dropped files
- C:\Users\analyst\AppData\Local\SumatraPDF\sumatrapdfcache\3a5742be7c0f9c757c927d504db1949a.png -
9500640ec3317904b4b354aee5426c7fc7ab494bb83b8dad839b0261bbbae221 - C:\Users\analyst\AppData\Local\SumatraPDF\SumatraPDF-settings.txt -
e3d82bd010d325b8c9d9ad76e52c2c01cf106920a12ec47ccfcaff06d26dd4f7 - root_.cache_dconf_user -
96a296d224f285c67bee93c30f8a309157f0daa35dc5b87e410b78630a09cfc7
Embedded URLs
- https://ggtraff.ru/strik?keyword=factoring+polynomials+practice+worksheet+with+answers
- https://site-1036633.mozfiles.com/files/1036633/jofumof.pdf
- https://site-1038586.mozfiles.com/files/1038586/wugefunujowifiluxula.pdf
- https://site-1042942.mozfiles.com/files/1042942/30205440395.pdf
- https://site-1038857.mozfiles.com/files/1038857/kaberemijamu.pdf
- https://site-1037111.mozfiles.com/files/1037111/durefuruxozafazanatale.pdf
- https://uploads.strikinglycdn.com/files/d641b966-f77e-40e9-9280-29db6996fa93/53637426583.pdf
- https://uploads.strikinglycdn.com/files/78f530f2-c12d-4118-a3d8-35aa69eaaa6e/falis.pdf
- https://uploads.strikinglycdn.com/files/8596aabd-38bf-4a31-a732-7ec51ea4cd3d/36223799779.pdf
- https://uploads.strikinglycdn.com/files/a6d5525f-7e4c-42f4-a7d8-37dd2b34a5b7/rusaxop.pdf
- https://uploads.strikinglycdn.com/files/d3e62076-c711-4b48-82ba-b3bf2a9df3c0/50500035939.pdf
- https://site-1041944.mozfiles.com/files/1041944/44479098561.pdf
- https://site-1037059.mozfiles.com/files/1037059/xuvugukawapalaborelu.pdf
- https://site-1042541.mozfiles.com/files/1042541/bifobo.pdf
- https://uploads.strikinglycdn.com/files/ce0e6adc-0fa4-442a-8f9f-7b6f152ed85c/zitovaro.pdf
- https://uploads.strikinglycdn.com/files/79160cb5-5e0c-48b2-a234-eb0776b3c11c/vonanemowuvev.pdf
- https://uploads.strikinglycdn.com/files/6584b9e7-6f43-4d7f-9d21-c7eddea29c6f/doxogafujojozogovazo.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
Embedded domains
- ggtraff.ru
- site-1036633.mozfiles.com
- site-1038586.mozfiles.com
- site-1042942.mozfiles.com
- site-1038857.mozfiles.com
- site-1037111.mozfiles.com
- uploads.strikinglycdn.com
- site-1041944.mozfiles.com
- site-1037059.mozfiles.com
- site-1042541.mozfiles.com
- www.w3.org
- purl.org
- ns.adobe.com
Embedded IP addresses
- 20.42.65.84
- 52.110.12.40
- 74.178.232.29
- 40.84.85.40
- 72.145.35.103
- 57.155.101.212
- 135.234.160.244
- 4.230.171.124
- 20.231.239.246
- 52.123.129.14
- 162.159.36.2
- 149.154.167.99
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Analyzed on MalwareAnalyzer by Cyble · Open interactive report