MALICIOUS — 5th_grade_math_word_problems_workboo.pdf
MALICIOUS — 5th_grade_math_word_problems_workboo.pdf is a pdf sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (98/100). 4 of 53 detection engines flagged it, exhibiting 2 ATT&CK techniques.
Identification
- SHA-256:
d0fe82ba06bdc6fbf18e599b3edea93289ebcc66a0211774b628cdf1d4c6c026 - SHA-1:
ac847dc62aef314e19318e31e99ea5f3399ad8a8 - MD5:
0f0c7df087518f9d765d99ca9ea2256c - ssdeep:
1536:jMSW/uFM2jVctXgfcGo/EXGdoKrXSDj69E/Ctft8b4OgG7pqZOIu:ASquF3cXgfcviRKueft24O3qZ4 - TLSH:
T1CD36C0F3F197DE8C698E6B43EDFB101860DAE3C865728B944044766CC4A87AEBD10A54 - Submitted as: 5th_grade_math_word_problems_workboo.pdf
- File type: pdf · Size: 67782 bytes
- Verdict: malicious (98/100)
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 98/100 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 - Embedded link rated malicious by URL analysis: https://uploads.strikinglycdn.com/files/8f0049ff-c179-43ff-aeb5-9c3907911f0b/intercontinental_times_square.pdf - network signal, weight 0.70, confidence 0.80
- Contacted 16 external host(s) at runtime (4 HTTP) - network signal, weight 0.40, confidence 0.80
- Embedded network infrastructure: https://trafffe.ru/strik?utm_term=5th+grade+math+word+problems+workboo, https://uploads.strikinglycdn.com/files/8f0049ff-c179-43ff-aeb5-9c3907911f0b/intercontinental_times_square.pdf, https://uploads.strikinglycdn.com/files/53e25767-ad5f-4297-a032-0f86b75f2d5a/kobotaferopozeboben.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 (5 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30
Dynamic analysis (windows)
9664 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
- c.pki.goog
- 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
- 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
- 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
- 250.255.255.239.in-addr.arpa
- ntp.ubuntu.com
- http://www.msftconnecttest.com/connecttest.txt
- http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
Dropped files
- C:\Users\analyst\AppData\Local\SumatraPDF\sumatrapdfcache\aa601765882852d5ad6e997f05aa1640.png -
8d68214130bdd9bb8fe75dcc084e11eb23fc172425566e0b8eba3998b6f85121 - C:\Users\analyst\AppData\Local\SumatraPDF\SumatraPDF-settings.txt -
9227847b28b0a10c63a9158d35d070f71c4dc54f889b615441c57081b61122f8 - root_.cache_dconf_user -
96a296d224f285c67bee93c30f8a309157f0daa35dc5b87e410b78630a09cfc7
Embedded URLs
- https://trafffe.ru/strik?utm_term=5th+grade+math+word+problems+workboo
- https://s3.amazonaws.com/leteraxewe/lorixovukugebewu.pdf
- https://uploads.strikinglycdn.com/files/8f0049ff-c179-43ff-aeb5-9c3907911f0b/intercontinental_times_square.pdf
- https://uploads.strikinglycdn.com/files/53e25767-ad5f-4297-a032-0f86b75f2d5a/kobotaferopozeboben.pdf
- https://s3.amazonaws.com/lekizopiloref/fiwuxavik.pdf
- https://s3.amazonaws.com/zategafozasiru/74310981944.pdf
- https://s3.amazonaws.com/sefiwegegagu/cribriform_plate_foramina.pdf
- https://uploads.strikinglycdn.com/files/afbef1dd-e396-4ea8-bef9-46c4ec8cb6d4/giriwe.pdf
- https://s3.amazonaws.com/votawawo/taranis_q_x7_s_opentx_user_manual.pdf
- https://s3.amazonaws.com/luxelula/community_service_gift_certificate_template.pdf
- https://s3.amazonaws.com/zafirawit/40912457095.pdf
- https://s3.amazonaws.com/xipavir/aptitude_formulas_for_gate.pdf
- https://s3.amazonaws.com/bajapovogam/granny_pc_without_bluestacks.pdf
- https://uploads.strikinglycdn.com/files/81e82eaa-d283-4041-889d-c001b32f14e3/the_last_werewolf_trilogy.pdf
- https://s3.amazonaws.com/jamokaroxoj/wedding_budget_template.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
- http://rb.symcb.com/rb.crl
- http://203.26.79.13/filestreamingservice//files/753bb2df-a166-494f-aa7d-5678b1ef0c56/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
Embedded domains
- trafffe.ru
- s3.amazonaws.com
- uploads.strikinglycdn.com
- www.w3.org
- purl.org
- ns.adobe.com
Embedded IP addresses
- 172.215.188.232
- 135.233.45.221
- 4.150.223.97
- 48.211.4.16
- 4.230.171.124
- 74.178.240.51
- 135.232.92.137
- 52.123.128.14
- 40.99.133.242
- 40.104.4.2
- 172.178.240.162
- 74.178.232.29
- 203.26.79.13
- 20.42.72.131
- 172.217.25.163
- 20.184.175.2
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Analyzed on MalwareAnalyzer by Cyble · Open interactive report