MALICIOUS — 4829813_instrukciya__k__avaya_.pdf

MALICIOUS — 4829813_instrukciya__k__avaya_.pdf is a pdf sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (75/100). 2 of 50 detection engines flagged it, exhibiting 3 ATT&CK techniques.

Identification

• SHA-256: e3862e112ac6128d961172650e390678c4f10ecf83d8bad4182a1833e0732937
• SHA-1: da26286a3fe58abcd770c2b36d13ce774dc3608b
• MD5: 9ebb74052104737eb1654bbb17fbbda6
• ssdeep: 6144:1sc5kmr/c1qxnRozgo+7b/Zf2PebSe+YAovOagym89Qa9ZMGQ:T5kmreqxRozIf2Wmc5gJ2QaEGQ
• TLSH: T18E4802F3DE25AE6DC90DBB59BD35043C1E12926604E1173228B759F3227936B230E672
• Submitted as: 4829813_instrukciya__k__avaya_.pdf
• File type: pdf · Size: 358051 bytes
• Verdict: malicious (75/100)

Detections (2 of 50 engines)

• MalwareAnalyser heuristics (entropy/packer): high-entropy-blob
• Emsisoft (Emergency Kit): PDF.Spam.Heur.13

MITRE ATT&CK

• T1112
• T1105
• T1566.002

Why this verdict

The malicious score of 75/100 is the fusion of 7 weighted signals:

• Contacted 12 external host(s) at runtime (1 HTTP) - network signal, weight 0.40, confidence 0.80
• Embedded link rated suspicious by URL analysis: http://img1.liveinternet.ru/images/attach/c/7//4821/4821439_deklaraciya__2012__skachat_.pdf - network signal, weight 0.40, confidence 0.60
• Embedded network infrastructure: http://botcraftman.ru/?lip&keyword=%D0%B8%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D1%8F+%D0%BA+avaya+2410&charset=utf-8, http://img1.liveinternet.ru/images/attach/c/7//4821/4821439_deklaraciya__2012__skachat_.pdf, http://img0.liveinternet.ru/images/attach/c/7//4828/4828459_skachat__chituy__na_.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 (4 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30

Dynamic analysis (windows)

9622 behavior events · 1 ATT&CK techniques · 3 dropped files.

Runtime network

• www.msftconnecttest.com
• rb.symcd.com
• rb.symcb.com
• searchapp.bundleassets.example
• inference.location.live.net
• desktop-hsgcbep
• 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
• 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
• 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
• 250.255.255.239.in-addr.arpa
• 255.255.254.169.in-addr.arpa
• ntp.ubuntu.com
• 251.0.0.224.in-addr.arpa
• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl
• http://203.26.79.13/filestreamingservice/files/753bb2df-a166-494f-aa7d-5678b1ef0c56?P1=1787391717&P2=404&P3=2&P4=MVrGZZSzUBsIjYh7FDWc%2feub1n7KGmVNAl5xvwXbADUWjxO6z7feP8Fh6MxY%2blPS2agDIgBvoZ%2f8RAFhxwyVGA%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
• 23.40.52.85
• 172.66.2.5 US · San Francisco · AS13335 Cloudflare, Inc.

Dropped files

• C:\Users\analyst\AppData\Local\SumatraPDF\SumatraPDF-settings.txt - f3ca900a3287b49f55c2075abce10c79d1feb437310e48c7360ac2d622ca3415
• C:\Users\analyst\AppData\Local\SumatraPDF\sumatrapdfcache\606cb10c018ed2d418a831cb7f38b6e2.png - 7e7edfd62a17fa1e67b97f5a1add4c961dfb68115346fd82c1690fb9ae1ff41d
• root_.cache_dconf_user - 96a296d224f285c67bee93c30f8a309157f0daa35dc5b87e410b78630a09cfc7

Embedded URLs

• http://botcraftman.ru/?lip&keyword=%D0%B8%D0%BD%D1%81%D1%82%D1%80%D1%83%D0%BA%D1%86%D0%B8%D1%8F+%D0%BA+avaya+2410&charset=utf-8
• http://img1.liveinternet.ru/images/attach/c/7//4821/4821439_deklaraciya__2012__skachat_.pdf
• http://img0.liveinternet.ru/images/attach/c/7//4828/4828459_skachat__chituy__na_.pdf
• http://img0.liveinternet.ru/images/attach/c/7//4824/4824840_teoriya__i__praktika_.pdf
• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl
• http://203.26.79.13/filestreamingservice/files/753bb2df-a166-494f-aa7d-5678b1ef0c56?P1=1787391717&P2=404&P3=2&P4=MVrGZZSzUBsIjYh7FDWc%2feub1n7KGmVNAl5xvwXbADUWjxO6z7feP8Fh6MxY%2blPS2agDIgBvoZ%2f8RAFhxwyVGA%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com

Embedded domains

• botcraftman.ru
• img1.liveinternet.ru
• img0.liveinternet.ru

Embedded IP addresses

• 172.66.2.5
• 52.123.252.233
• 57.154.63.210
• 57.155.104.224
• 74.178.76.44
• 135.233.45.221
• 74.179.77.204
• 4.144.132.114
• 203.26.79.13
• 20.165.94.63
• 162.159.36.2
• 4.230.171.124

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report