Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea89f1374d92265…

MALICIOUS

PDF

58.2 KB Created: 2021-08-18 12:57:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: e31df52f4fdb71e9b381c025897ebdd4 SHA-1: 33d15b08648871e2eac73eb2c9c7c844e49901fb SHA-256: eea89f1374d9226534154da73bf040026538068377f9f57c14b6100a6381a30c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of PDF_URI and PDF_SEO_DISPOSABLE_LINK_FARM heuristics further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7720

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://inwebjor.ru/uplcv?utm_term=whirlpool+refrigerator+water+dispenser+drip+tray PDF link annotation
    • http://osc-pribor.ru/products_pictures/file/12743653547.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a4fa9393615---fedir.pdfIn PDF document text
    • http://drinkandshrink.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609142000d48d---tabamosuzazenoli.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160b3b9784c885---14713888973.pdfIn PDF document text
    • https://eltonltd.ru/sites/default/files/uploads/38085097939.pdfIn PDF document text
    • https://henklinders.nl/henklinders/upload/files/tuvukimosiduvefobedi.pdfIn PDF document text
    • https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608338a8d874e---76412822470.pdfIn PDF document text
    • https://ahreco.com/uploads/news_file/wometemofi.pdfIn PDF document text
    • http://amirafouad.com/uploaded_files/file/3908274163.pdfIn PDF document text
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/4lobmg13novaa3qstuo0c102k3/juvakevuvuxuwevirofunaji.pdfIn PDF document text
    • http://beijingxinzhi.com/userfiles/file/20210814162730_2010815701.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/k624j9js4oakn0p5n06ibefn11/wawaganidimetizovebav.pdfIn PDF document text
    • http://koreaseowon.com/ckupload/files/37697863376.pdfIn PDF document text
    • http://jyotiacademicpress.org/uploads/file/xizesutaz.pdfIn PDF document text
    • https://www.dekleinewerf.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160705810bc3bc---16446913379.pdfIn PDF document text
    • https://www.artikel238.nl/emmwebbit/resources/ckfinder/userfiles/files/xunujuvetubaku.pdfIn PDF document text
    • https://www.isnb.co.uk/wp-content/plugins/super-forms/uploads/php/files/6c4b0cd169216cb64d07c71c6535a670/wutupi.pdfIn PDF document text
    • https://digireg.it/upload/fegujolakulirujuripisamu.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/758173d1553f93ca298a99d819277bb5/23748962290.pdfIn PDF document text
    • https://www.alphaveneers.com/wp-content/plugins/super-forms/uploads/php/files/0b1759da6fb3f947c5250f38d80f712e/90015809667.pdfIn PDF document text
    • https://lightspec.ca/wp-content/plugins/super-forms/uploads/php/files/cc08afa6ee7d0d3142064dca24e116e0/denudinunegu.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/161059675e51e8---24958117950.pdfIn PDF document text
    • https://ksboutlet.com/file/files/40414593707.pdfIn PDF document text
    • http://softtox.com/new/userfiles/file/saruwanapazaputufa.pdfIn PDF document text
    • http://alfavit.tv/userfiles/file/puvivuxixetotewawaziji.pdfIn PDF document text
    • http://ladue62.com/clients/2/2d/2d0487a90c18d3a1b3df44839405a665/File/foraloginabewezusapa.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/hpmdpv7hddv227le3i7uoffil4/seterubupixebir.pdfIn PDF document text
    • http://myhomeinparis.com/userfiles/files/74566530526.pdfIn PDF document text

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