Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2408cfc54ee12c4…

MALICIOUS

PDF

72.7 KB Created: 2021-09-03 20:38:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 9af29dcec9207913b82ed93e616cf830 SHA-1: e8fd6c05aa941078b0f9acae4e04b4df5ff04fe0 SHA-256: f2408cfc54ee12c42b21f22d3595c71098c91053158cd6270eda24ef36fb3d85
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF contains numerous links, many pointing to compromised WordPress sites and other domains hosting PDF files. The 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics indicate a pattern of using compromised infrastructure to host or link to malicious content. ClamAV also detected this file as 'Pdf.Phishing.Trojan'. The combination suggests the PDF is designed to lure users to malicious sites, likely for phishing or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5973

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://esz.jp/img/editor/files/zavodel.pdf In PDF document text
    • http://graphicon.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa16326809---62182070869.pdfIn PDF document text
    • http://detskaoptika.cz/ckfinder/userfiles/files/povopepuja.pdfIn PDF document text
    • https://afra24.com/basefile/afra24/files/degove.pdfIn PDF document text
    • http://ofipapel.org//ckfinder/userfiles/files/50030293146.pdfIn PDF document text
    • http://friluftsgruppen.se/wp-content/plugins/formcraft/file-upload/server/content/files/160f5388b7fd1f---76145997632.pdfIn PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b867c35cb9d---70008950254.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/otsi2ir2omog3vsvenai07t0u1/komurikexibesagobivupuf.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/nio040avcfqv5iu42q2f33ljmt/joxaf.pdfIn PDF document text
    • http://guides2alpes.fr/uploads/file/dirozoxoduzoboti.pdfIn PDF document text
    • http://mattstergamer.com/wp-content/plugins/super-forms/uploads/php/files/0nnjoq5j07o2v2sek3kipqd8iq/gegebezome.pdfIn PDF document text
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/qtpd41m7v11gddbte8s7l8b5ue/83439124175.pdfIn PDF document text
    • http://hometextiles-consultant.com/ckfinder/userfiles/files/xixokupugimesafixadakawaj.pdfIn PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/160916eb2e44d8---91778378791.pdfIn PDF document text
    • https://tirthmobile.com/wp-content/plugins/super-forms/uploads/php/files/sh36a29mtrk7h3jofnp3pvbu46/jixumegofituzilizejinimox.pdfIn PDF document text
    • http://ventmetal.ru/userfiles/files/60380939039.pdfIn PDF document text
    • http://pogologistics.com/ckfinder/userfiles/files/sibukorekitowij.pdfIn PDF document text
    • https://ytdrive.com/CKEdit/upload/files/58527355483.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bc09cc57b7b---65344965094.pdfIn PDF document text
    • http://romengo.com/ckfinder/userfiles/files/dunafe.pdfIn PDF document text
    • http://wooshin.kr/uploaded/file/170825937360bc6ead93e3e.pdfIn PDF document text
    • http://ecohort.com/userfiles/files/57958836632.pdfIn PDF document text
    • http://hpmcfamilyreunion1968.com/clients/83891/File/kiwuni.pdfIn PDF document text
    • http://aitrans.cn/UploadFile/file/F1202106222047358568.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c401a3ab153---vewedidobe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=crosby+stills+nash+sheet+music+pdfPDF link annotation

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