Malicious PDF — malware analysis report

Heuristics 7

• 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.
• Embedded JS stream low PDF_JS
  PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
• External URI info PDF_URI
  PDF contains an external URL action
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• 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://szyoujin.com/UploadFile/file/20210907160759931.pdf In PDF document text

  • https://keiba-like.biz/js/ckfinder/userfiles/files/53474296253.pdfIn PDF document text
  • https://acrgroup.nl/userfiles/file/53715244531.pdfIn PDF document text
  • http://lisaarkinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/powojawivulimulido.pdfIn PDF document text
  • http://przystaneknida.pl/data/aktualnosci_imgs/file/92686282302.pdfIn PDF document text
  • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1614117362bc08---57126290680.pdfIn PDF document text
  • https://speculatio.in/userfiles/file/33644511120.pdfIn PDF document text
  • https://www.jnvhardoi.org/ckfinder/userfiles/files/kixexigavidugedom.pdfIn PDF document text
  • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/161489e065b4a4---84432901976.pdfIn PDF document text
  • http://hcbarrett.com/user_area/file/gepexajunifuwevif.pdfIn PDF document text
  • http://gesundheit-im-blog.de/userfiles/file/rowinoginiwupulobujo.pdfIn PDF document text
  • http://mitsubishilongbien.vn/images/ckeditor/files/98304301171.pdfIn PDF document text
  • http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/84bf2e658348342726522d8121cfde49/fepakemofol.pdfIn PDF document text
  • https://b7b.reviewz.eu/app/webroot/files/userfiles/files/bosuxoxupugadigemivimij.pdfIn PDF document text
  • http://cerescommoditiesltd.com/Images_upload/files/rijititijek.pdfIn PDF document text
  • https://thefencedocumentary.ca/adminfiles/file/6110084465.pdfIn PDF document text
  • http://onishi-kyosendo.jp/archive/98239010531.pdfIn PDF document text
  • http://amandatour.ru/js/ckfinder/userfiles/files/mulitowexaminubemuvol.pdfIn PDF document text
  • http://onthebroadway.com/CPD/adminpanel/upload/file/32411772513.pdfIn PDF document text
  • https://jackinthegym.com/uploads/files/202109060220263222.pdfIn PDF document text
  • https://alcc.c-zentrix.com/ALCC/mail_attachments/multitenant-ws-01/1/1630870494.pdfIn PDF document text
  • http://xn--9i1b14l32gg2dsybq3b.com/upload/fckeditor/file/benugaxuvuze.pdfIn PDF document text
  • http://munnarteabungalows.com/userfiles/file/41886494597.pdfIn PDF document text
  • http://kfoodntea.com/dataroom/file/11038882682.pdfIn PDF document text
  • http://pttaccounting.com/userfiles/files/mumolesinepeloregebaloto.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=xiaomi+security+app+latest+versionPDF link annotation
  • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
  • http://purl.org/dc/elements/1.1/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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