Malicious PDF — malware analysis report

Heuristics 8

• 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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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 https://catamma.ru/uplcv?utm_term=igo+8+apk+free+download PDF link annotation

  • https://www.natursany.com/ckfinder/userfiles/files/larejijut.pdfIn PDF document text
  • https://teater77.nl/userfiles/file/gebaxudumamosarexin.pdfIn PDF document text
  • http://theleadershipworks.com/PO2/UPFILE/userfiles/files/kaxodukejoba.pdfIn PDF document text
  • https://cantellodetersiviprofessionali.it/uploads/file/38298491410.pdfIn PDF document text
  • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613beec8043d1---63948414229.pdfIn PDF document text
  • http://tiwtactic.com/userfiles/files/latisipezixaroka.pdfIn PDF document text
  • http://www.performhabitat.fr/bundles/astadmin/js/ckfinder/userfiles/files/82726694432.pdfIn PDF document text
  • http://china-zub.ru/userfiles/file/22466518844.pdfIn PDF document text
  • https://hoatuoi360.vn/uploads/files/kefetevidif.pdfIn PDF document text
  • https://taiwancy.com/app/webroot/userfiles/files/tonutigawabezexeliroja.pdfIn PDF document text
  • http://konyanincigkoftecisi.com/userfiles/file/76221735155.pdfIn PDF document text
  • https://mb-classic-service.de/userfiles/file/18895534240.pdfIn PDF document text
  • http://a-pluset.com/userfiles/99632238866.pdfIn PDF document text
  • https://myagenda.myagenda.cz/pictures/editor/files/dowojamerafuvodiruk.pdfIn PDF document text
  • http://nbnjl.com/userfiles/files/27756189279.pdfIn PDF document text
  • https://onlineadda.net/ckfinder/userfiles/files/renonexagezetotekelik.pdfIn PDF document text
  • http://oecschool.com/userfiles/file/23626030558.pdfIn PDF document text
  • https://nwdglobal.com/ckfinder/userfiles/files/betuxu.pdfIn PDF document text
  • http://2ds-creations.fr/userfiles/file/38647121595.pdfIn PDF document text
  • http://proclima-membranes.ru/userfiles/file/zukaxonerawomexoru.pdfIn PDF document text
  • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/pik7nr0tb87fm3gog4u0o54m5c/lavufojerepajivagume.pdfIn PDF document text
  • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/161501b74c6ab5---fowapex.pdfIn PDF document text
  • http://comlark.ru/userfiles/files/4812308737.pdfIn PDF document text
  • http://www.southforconstruction.com/frontend/web/ckfinder/userfiles/files/serasu.pdfIn PDF document text
  • https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613f87f255b64---lafegepedemowewunanesi.pdfIn PDF document text
  • http://music-summer-courses.eu/upload/files/sawarasivagemanem.pdfIn PDF document text
  • 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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