MALICIOUS — 5a8394918c1c7a99b5aafa96c72178b5d7c2f900b424e3fe8f60f1a8adc0c7b4

MALICIOUS — 5a8394918c1c7a99b5aafa96c72178b5d7c2f900b424e3fe8f60f1a8adc0c7b4 is a pdf sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (92/100). 3 of 54 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

• SHA-256: 5a8394918c1c7a99b5aafa96c72178b5d7c2f900b424e3fe8f60f1a8adc0c7b4
• SHA-1: 8c7a30f28c61213cf78e0ad2474a2184d8a08623
• MD5: 978c132e8ab47cf3c6df5bb687eedda6
• ssdeep: 6144:laUS+WID9aTrJPjaPg5BfUfwqqAB8ljAWzYP6UcL4H0+CjxVX+g:RYg9oJPmIPLmB8l10P6UM20V9F
• TLSH: T18A4802F1CB01ABA9DB6D77623C34502E5E6B265345F02B35A81318FA52B82FB3349174
• Submitted as: 5a8394918c1c7a99b5aafa96c72178b5d7c2f900b424e3fe8f60f1a8adc0c7b4
• File type: pdf · Size: 376824 bytes
• Verdict: malicious (92/100)

Detections (3 of 54 engines)

• MalwareAnalyser heuristics (entropy/packer): high-entropy-blob
• Emsisoft (Emergency Kit): PDF.Spam.Heur.13
• Kaspersky (KVRT): HEUR:Hoax.PDF.Phish.gen

MITRE ATT&CK

• T1105
• T1566.002

Why this verdict

The malicious score of 92/100 is the fusion of 10 weighted signals:

• Emsisoft (Emergency Kit) flagged PDF.Spam.Heur.13 (rule PDF.Spam.Heur.13) - 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 link rated suspicious by URL analysis: http://img1.liveinternet.ru/images/attach/c/7//4829/4829963_raspisanie__avtobusa__25_.pdf - network signal, weight 0.40, confidence 0.60
• Embedded network infrastructure: http://botcraftman.ru/?lip&keyword=%D1%88%D1%83%D0%BA%D1%88%D0%B8%D0%BD+%D0%BA%D0%B0%D0%BB%D0%B8%D0%BD%D0%B0+%D0%BA%D1%80%D0%B0%D1%81%D0%BD%D0%B0%D1%8F+%D0%BA%D1%80%D0%B0%D1%82%D0%BA%D0%BE%D0%B5+%D1%81%D0%BE%D0%B4%D0%B5%D1%80%D0%B6%D0%B0%D0%BD%D0%B8%D0%B5&charset=utf-8, http://img1.liveinternet.ru/images/attach/c/7//4829/4829963_raspisanie__avtobusa__25_.pdf, http://img1.liveinternet.ru/images/attach/c/7//4829/4829826_programma__dlya__sozdaniya_.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 10 external host(s) at runtime - network signal, weight 0.12, confidence 0.55
• Extracted generic config (4 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30
• Memory forensics: 3 finding(s) elsewhere in the guest, not attributed to this sample, e.g. RWX/private injected region in Acrobat.exe (pid 3940) (rule windows.malfind.Malfind) - memory signal, weight 0.05, confidence 0.30

Dynamic analysis (windows)

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

Runtime network

• www.msftconnecttest.com
• rb.symcd.com
• rb.symcb.com
• inference.location.live.net
• desktop-hsgcbep._dosvc._tcp.local
• 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
• 20.190.142.163
• 23.198.40.44
• 52.110.12.2 AU · Sydney · AS8075 Microsoft Corporation
• 4.230.171.124 KR · Seoul · AS8075 Microsoft Corporation
• 4.247.188.224 IN · Pune · AS8075 Microsoft Corporation
• 52.230.60.54 SG · Singapore · AS8075 Microsoft Corporation
• 52.168.112.67 US · Chantilly · AS8075 Microsoft Corporation
• 20.165.94.63 US · San Antonio · AS8075 Microsoft Corporation
• 23.40.52.111

Dropped files

• root_.cache_dconf_user - 96a296d224f285c67bee93c30f8a309157f0daa35dc5b87e410b78630a09cfc7

Embedded URLs

• http://botcraftman.ru/?lip&keyword=%D1%88%D1%83%D0%BA%D1%88%D0%B8%D0%BD+%D0%BA%D0%B0%D0%BB%D0%B8%D0%BD%D0%B0+%D0%BA%D1%80%D0%B0%D1%81%D0%BD%D0%B0%D1%8F+%D0%BA%D1%80%D0%B0%D1%82%D0%BA%D0%BE%D0%B5+%D1%81%D0%BE%D0%B4%D0%B5%D1%80%D0%B6%D0%B0%D0%BD%D0%B8%D0%B5&charset=utf-8
• http://img1.liveinternet.ru/images/attach/c/7//4829/4829963_raspisanie__avtobusa__25_.pdf
• http://img1.liveinternet.ru/images/attach/c/7//4829/4829826_programma__dlya__sozdaniya_.pdf
• http://img1.liveinternet.ru/images/attach/c/7//4829/4829977_umenshenie__iskovuyh__trebovaniy_.pdf
• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl

Embedded domains

• botcraftman.ru
• img1.liveinternet.ru

Embedded IP addresses

• 72.154.7.101
• 20.42.72.131
• 52.110.12.2
• 4.230.171.124
• 4.247.188.224
• 52.230.60.54
• 52.168.112.67
• 20.165.94.63
• 20.42.65.85
• 72.145.35.102

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report