MALICIOUS — 545b5aefb0a2b57c625edb99e7a71d7f81aafc6b2163b001417c3df881b38300

MALICIOUS — 545b5aefb0a2b57c625edb99e7a71d7f81aafc6b2163b001417c3df881b38300 is a pdf sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (96/100). 4 of 54 detection engines flagged it, exhibiting 1 ATT&CK technique.

Identification

• SHA-256: 545b5aefb0a2b57c625edb99e7a71d7f81aafc6b2163b001417c3df881b38300
• SHA-1: c4db71519ce93542a0903f03153240fe47eaaae5
• MD5: cff5e3b3cab134bc707ac0a064228123
• ssdeep: 768:L1Zbg+PJdoirxqOm/+jCSJJ5Mx1Hq/y2WnAqe4GIzlPo7:3nkidqYCQ5Mx1o8Pe4bhPo7
• TLSH: T10030BFF7818BCC686682CB03AAE5617C7649E7DD2520ED5459D83B2CC070AFC6B90F21
• Submitted as: 545b5aefb0a2b57c625edb99e7a71d7f81aafc6b2163b001417c3df881b38300
• File type: pdf · Size: 36778 bytes
• Verdict: malicious (96/100)

Detections (4 of 54 engines)

• MalwareAnalyser heuristics (entropy/packer): high-entropy-blob
• Microsoft Defender: Trojan:PDF/Phish.CFN!MTB
• Emsisoft (Emergency Kit): PDF.Spam.Heur.2
• Trellix Stinger (McAfee): PDF/Phish-TWM!CFF5E3B3CAB1

MITRE ATT&CK

• T1105

Why this verdict

The malicious score of 96/100 is the fusion of 9 weighted signals:

• Microsoft Defender flagged Trojan:PDF/Phish.CFN!MTB (rule Trojan:PDF/Phish.CFN!MTB) - engine signal, weight 0.55, confidence 0.85
• Emsisoft (Emergency Kit) flagged PDF.Spam.Heur.2 (rule PDF.Spam.Heur.2) - engine signal, weight 0.55, confidence 0.85
• Trellix Stinger (McAfee) flagged PDF/Phish-TWM!CFF5E3B3CAB1 (rule PDF/Phish-TWM!CFF5E3B3CAB1) - engine signal, weight 0.55, confidence 0.85
• Contacted 8 external host(s) and 3 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
• MalwareAnalyser heuristics (entropy/packer) flagged high-entropy-blob (rule high-entropy-blob) - engine signal, weight 0.35, confidence 0.70
• Embedded network infrastructure: https://netcdn.xyz/app/406889139/free-daily-spins-coin-master-game-hack, http://huizentekoop-andalusie.nl/images/tiktok-free-internet_GM835599320.pdf, http://huizentekoop-andalusie.nl/images/free-800-robux_GM431946152.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
• Extracted generic config (6 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30

Dynamic analysis (windows)

1030 behavior events · 0 ATT&CK techniques · 1 dropped files.

Runtime network

• www.msftconnecttest.com
• rb.symcd.com
• rb.symcb.com
• inference.location.live.net
• c.pki.goog
• x2.c.lencr.org
• ye.c.lencr.org
• yr.c.lencr.org
• ntp.ubuntu.com
• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl
• http://c.pki.goog/r/r1.crl
• http://x2.c.lencr.org/
• http://ye.c.lencr.org/
• http://c.pki.goog/wr2/9UVbN0w5E6Y.crl
• http://yr.c.lencr.org/
• 23.40.52.209
• 23.11.37.157
• 20.190.167.148

Dropped files

• root_.cache_dconf_user - 96a296d224f285c67bee93c30f8a309157f0daa35dc5b87e410b78630a09cfc7

Embedded URLs

• https://netcdn.xyz/app/406889139/free-daily-spins-coin-master-game-hack
• http://huizentekoop-andalusie.nl/images/tiktok-free-internet_GM835599320.pdf
• http://huizentekoop-andalusie.nl/images/free-800-robux_GM431946152.pdf
• http://huizentekoop-andalusie.nl/images/free-spin-coin-master-ios_GM406889139.pdf
• http://huizentekoop-andalusie.nl/images/free-spins-coin-master-hack-2021_GM406889139.pdf
• http://huizentekoop-andalusie.nl/images/minecraft-hacked-client-18_GM479516143.pdf
• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl
• http://c.pki.goog/r/r1.crl
• http://x2.c.lencr.org/
• http://ye.c.lencr.org/
• http://c.pki.goog/wr2/9UVbN0w5E6Y.crl
• http://yr.c.lencr.org/

Embedded domains

• netcdn.xyz
• huizentekoop-andalusie.nl
• x2.c.lencr.org
• ye.c.lencr.org
• yr.c.lencr.org

Embedded IP addresses

• 172.172.255.216
• 20.42.73.26
• 52.110.12.22
• 52.110.12.30
• 4.230.171.124
• 72.145.35.97
• 20.42.65.84
• 52.148.114.188

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report