Malicious PDF — malware analysis report

Static analysis result for SHA-256 b522f6e2595c241e…

MALICIOUS

PDF

58.2 KB Created: 2021-03-21 09:52:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0e6c921d40eeb1f023eb6fba424eb14d SHA-1: 8908d79f40b53ff6cc1fdd7742fb0765d72e5370 SHA-256: b522f6e2595c241e3be97d88467bc6b9ac49231158ee80a4fccb745be04c78e2
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or SEO manipulation tactic. The presence of external URIs and the overall structure indicate an attempt to redirect users to potentially harmful content, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9085

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://nipisod.ru/strik?utm_term=life%2527s+little+instruction+book+volume+1 PDF link annotation
    • http://nesobaka3.xyz/guitar_grimoire_reviewx7ci0.pdfIn PDF document text
    • https://rinadulig.weebly.com/uploads/1/3/0/7/130739308/xivoref-mogek.pdfIn PDF document text
    • https://cdn.sqhk.co/veladaxuzeba/WheZ6ic/monster_truck_destruction_hack_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/kavevanix/kY58F2K/hyderabad_weather_report_telangana.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugavu/thgQlja/wefelizofufubudibetano.pdfIn PDF document text
    • http://oneitshop.pro/49206235614a7utu.pdfIn PDF document text
    • https://kozunetumoniwav.weebly.com/uploads/1/3/4/4/134482294/selok.pdfIn PDF document text
    • https://cdn.sqhk.co/mufipofunup/gjioFo0/games_to_play_online_with_friends_free_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/fedovipawe/lOxujam/jinupefe.pdfIn PDF document text
    • https://vifabuwu.weebly.com/uploads/1/3/1/6/131606679/zanejofiwux.pdfIn PDF document text
    • http://priz24.site/oyunsunucum_cs_1.6_bot_paketi4ok7q.pdfIn PDF document text
    • https://budemarapi.weebly.com/uploads/1/3/1/3/131381681/c63141d7.pdfIn PDF document text
    • https://zeruposizagaki.weebly.com/uploads/1/3/4/8/134854722/f966dec3.pdfIn PDF document text
    • http://ulekschool.online/muvasapukfzjvl.pdfIn PDF document text
    • https://poperetaro.weebly.com/uploads/1/3/4/8/134893078/9824557.pdfIn PDF document text
    • http://ogranifruit.space/molibosimarenentyi8.pdfIn PDF document text
    • https://gugabezari.weebly.com/uploads/1/3/4/5/134577353/e1b4cdc15.pdfIn PDF document text
    • https://dozetiwe.weebly.com/uploads/1/3/1/8/131856451/1110884.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/BjcGLhe/rakiv.pdfIn PDF document text
    • https://cdn.sqhk.co/divekezor/nTyGvjf/mokegorepipudek.pdfIn PDF document text
    • https://cdn.sqhk.co/mojafefegamo/KfhcRu8/6525946830.pdfIn PDF document text
    • http://xiwexuxe.atwebpages.com/xizowagebedusozumuv.pdfIn PDF document text
    • http://xotaferuju.myartsonline.com/calendario_escolar_2020_tucuman.pdfIn PDF document text

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