MALICIOUS — b81d450e8a258ee5cd0d7b86ca15aaa60d29e6289f44d26341452319e0b232ce

MALICIOUS — b81d450e8a258ee5cd0d7b86ca15aaa60d29e6289f44d26341452319e0b232ce is a pdf sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (96/100). 4 of 53 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

SHA-256: b81d450e8a258ee5cd0d7b86ca15aaa60d29e6289f44d26341452319e0b232ce
SHA-1: 2e524fe5d35a691f1c3c81c0efaaa4025fe469b7
MD5: 63dc7bd2b9bf72a9122e05c1198a022f
ssdeep: 1536:jShiyR/slEHyb5S5paFbfdgz4JIJJiuk2Lu32p0caaJfVW8pO73Wbp72zgufQa:PyR/JHW5S5UtGpJJih2Lu32qcDfU7K2Z
TLSH: T15B38D0F320E7DC2C77CB9F436DB655A8700AD7856222EA5480887AAC85BC57E7F10B11
Submitted as: b81d450e8a258ee5cd0d7b86ca15aaa60d29e6289f44d26341452319e0b232ce
File type: pdf · Size: 81688 bytes
Verdict: malicious (96/100)

Detections (4 of 53 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

Why this verdict

The malicious score of 96/100 is the fusion of 7 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
Contacted 18 external host(s) at runtime (8 HTTP) - network signal, weight 0.40, confidence 0.80
Embedded link rated suspicious by URL analysis: https://holcom-wd.holcom.vn/webroot/img/files/gotogoxerupusub.pdf - network signal, weight 0.40, confidence 0.60
Embedded network infrastructure: https://k-barrierfree.com/FileData/ckfinder/files/20210902_EAA666C94316C7ED.pdf, http://123podkrovie.sk/editor_uploads/files/40869725772.pdf, https://riolospettacoli.it/filesUploads/file/jewanoworesik.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 (19 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30

Dynamic analysis (windows)

9646 behavior events · 0 ATT&CK techniques · 3 dropped files.

Runtime network

www.msftconnecttest.com
rb.symcd.com
rb.symcb.com
inference.location.live.net
to-do.office.com
staging.to-do.officeppe.com
teams.cloud.microsoft
outlook.office.com
outlook.office365.com
outlook.cloud.microsoft
desktop-hsgcbep
ntp.ubuntu.com
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
http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl

Dropped files

C:\Users\analyst\AppData\Local\SumatraPDF\SumatraPDF-settings.txt - 09305c1ae19785f3ccbe490c477ddfacb5f8d8a430bb5a2ccd0e1f8ecebca726
C:\Users\analyst\AppData\Local\SumatraPDF\sumatrapdfcache\46211531e750385c0e443572d80a93aa.png - f435161ba0837d9b2eaf03a122c7b3ecb507c43dd8e018ffa9afb8923b656da7
root_.cache_dconf_user - 96a296d224f285c67bee93c30f8a309157f0daa35dc5b87e410b78630a09cfc7

Embedded URLs

https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=castle+crush+mod+hack+apk
https://k-barrierfree.com/FileData/ckfinder/files/20210902_EAA666C94316C7ED.pdf
http://123podkrovie.sk/editor_uploads/files/40869725772.pdf
https://riolospettacoli.it/filesUploads/file/jewanoworesik.pdf
http://robertoantoniz.com/resources/original/file/64837289451.pdf
http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16138a3463d4b4---58710479161.pdf
http://nirmalapublicschoolerumely.com/userfiles/file/pefelefes.pdf
http://big-blue-bus.com/pics/fotos/1/file/76260116961.pdf
https://holcom-wd.holcom.vn/webroot/img/files/gotogoxerupusub.pdf
http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/161427dbd171cf---vagebisite.pdf
http://gima.ge/admin/ckeditor/ckfinder/userfiles/files/jobep.pdf
http://neoneofitou.com/ckfinder/userfiles/files/84939479346.pdf
http://fasson.vip/images/editor/files/neposufuv.pdf
http://domosplast.hu/files/file/7566447136.pdf
http://webs123.com/userfiles/file/71464286160.pdf
http://naszymsladem.pl/upload/file/zizekamusalovidevi.pdf
http://dentalcenterstudio.it/userfiles/files/59247729733.pdf
http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/l7n1tfnf7366o4ocjiq0cvtr86/muwibedinovusexone.pdf
http://labellebeaute.com.hk/ckfinder/userfiles/files/lugoxofitobir.pdf
http://extrastyle.ee/ckfinder/userfiles/files/32715940160.pdf
http://www.megasaludips.com/wp-content/plugins/formcraft/file-upload/server/content/files/161427e396fe32---davuvejepenareb.pdf
http://interno-kazan.ru/upload/files/vuxojudusivukelilawizob.pdf
http://gamjagolla.com/uploads/files/44359631519.pdf
http://closehorses.com/userfiles/file/kuwuwidixenawoxifisolex.pdf
http://teamtrinity.net/trinitya/file/vufekepok.pdf

Embedded domains

feedproxy.google.com
k-barrierfree.com
riolospettacoli.it
robertoantoniz.com
nirmalapublicschoolerumely.com
big-blue-bus.com
www.tsssport.com
neoneofitou.com
fasson.vip
webs123.com
naszymsladem.pl
dentalcenterstudio.it
www.sunarpazarlama.com
labellebeaute.com.hk
www.megasaludips.com
interno-kazan.ru
gamjagolla.com
closehorses.com
teamtrinity.net
pointswestliving.com
chiangmai-esc.net
www.w3.org
purl.org
ns.adobe.com
123podkrovie.sk

Embedded IP addresses

20.184.175.2
52.110.12.54
52.110.12.55
4.247.188.233
4.144.132.223
4.230.171.124
74.179.71.159
74.179.77.204
203.26.79.13
172.66.2.5
135.233.95.144
20.112.250.133
52.123.128.14
40.79.141.152
135.234.160.244
20.42.65.89
20.184.175.18
20.50.73.15

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report