Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ed8582a30201efc…

MALICIOUS

PDF

47.6 KB Created: 2021-09-16 03:44:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 08dd2192a2059103f16dc8c811a6b435 SHA-1: 258c29f5bdfd0975259c7e3d54917d887ec7be02 SHA-256: 9ed8582a30201efc6605ece2425462f330af69ea52b429c5a4c5fa1ac15186f2
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to other PDF files hosted on various domains, indicating a link farm. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic confirms this behavior, suggesting an attempt to distribute or redirect users to malicious content. The ML classifier and ClamAV detection further support its malicious nature, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7471

Heuristics 4

  • 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 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 http://hightopeducation.com/cms_uploaded/file/fogozivedomurowureb.pdf In PDF document text
    • http://www.scsk12.org/policy/files/files/lofipuniwixalozazez.pdfIn PDF document text
    • http://lasermedia.cn/userfiles/file/vevasaduguvewesopugupugom.pdfIn PDF document text
    • http://giadinhlaurenso.org/upload/files/kajutidinatusimexovoji.pdfIn PDF document text
    • http://izumrud38.com/ckfinder/userfiles/files/xijumarex.pdfIn PDF document text
    • http://monticellotownship.org/userfiles/file/75447225082.pdfIn PDF document text
    • http://kripasec.com/userfiles/file/vobulazonesasu.pdfIn PDF document text
    • http://boldogelet.hu/media/kemun.pdfIn PDF document text
    • http://numismatika-nbkpdy.cz/userfiles/file/bikamujatazadosek.pdfIn PDF document text
    • http://mardeestilos.es/fotos/file/25443618661.pdfIn PDF document text
    • http://lnv-cnc.gr/userfiles/file/16727359329.pdfIn PDF document text
    • http://thucphamchucnangmy.vn/uploads/files/babelixeborazama.pdfIn PDF document text
    • http://multi-accueil.fr/ressource/site-image/files/55307227539.pdfIn PDF document text
    • http://baohanhranghm.com/upload/img/files/gafisoremit.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/e942fd027f7002f36cc3e7f21155eab1/jagix.pdfIn PDF document text
    • http://xsjsbzrw.com/uploads/files/83266156519.pdfIn PDF document text
    • https://www.la-providence-ehpad.fr/ckfinder/userfiles/files/dewowakokuletegi.pdfIn PDF document text
    • http://www.waetsukai.jp/system/ckfinder/userfiles/files/bolulomog.pdfIn PDF document text
    • http://agendatourvietnam.com/hinhanh/file/wazirasajofazakonujizovul.pdfIn PDF document text
    • http://lamay.de/userfiles/file/tetatozolisiketo.pdfIn PDF document text
    • http://mousike.it/img_ins/files/37109093267.pdfIn PDF document text
    • http://avtosfera28.ru/userfiles/file/31882115058.pdfIn PDF document text
    • http://duszek-lasu.pl/userfiles/file/janusovetedenipaw.pdfIn PDF document text
    • https://hopefor.today/wp-content/plugins/super-forms/uploads/php/files/ee1cfe05242464aca14ec22bea110a88/supasikonozodon.pdfIn PDF document text
    • http://website-design-company.in/dev3/damodar/ckfinder/core/connector/php/userfiles/files/rilaw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=superuser+apk+2017PDF link annotation