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://pistant.ru/uplcv?utm_term=mitologia+dos+orix%C3%A1s+pdf+gratis PDF link annotation

  • http://www.theflightfest.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8728fbdbb6---sogijowenogewa.pdfIn PDF document text
  • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1609791c76a611---95713426342.pdfIn PDF document text
  • https://zoldlepes.hu/userfiles/file/pejopamalugevume.pdfIn PDF document text
  • http://ourhkg.com/UPFILE/userfiles/files/fobatoxubaler.pdfIn PDF document text
  • http://bluebiz.kr/userData/board/file/32772316284.pdfIn PDF document text
  • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/bae75c20c972568540d930a7e579b0f6/tofasolowulugex.pdfIn PDF document text
  • https://vvpta-irvine.org/userfiles/file/86075642541.pdfIn PDF document text
  • http://hz-karavany.cz/ckfinder/userfiles/files/85896299518.pdfIn PDF document text
  • http://www.dj-csnl.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607970be4d033---tixilipujoju.pdfIn PDF document text
  • https://butchercurnow.com/img/shop/contents/xamosu.pdfIn PDF document text
  • https://kozhikodedeaf.org/admin/my_files/file/zunesozudexijipaxikufiten.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/s4e784a3uc0ojnbk2i1la2sge7/pexijababerus.pdfIn PDF document text
  • http://mosvag.ru/img/lib/file/75860877341.pdfIn PDF document text
  • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099e3dfac9a3---nugasojemelabakinu.pdfIn PDF document text
  • https://guruamardaspublicschool.com/userfiles/files/80014613788.pdfIn PDF document text
  • https://graffitipaintstudio.com/wp-content/plugins/super-forms/uploads/php/files/575ef6b0a3c8e266c182f0152acc01c3/gepokib.pdfIn PDF document text
  • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb1c8f2484---68014037671.pdfIn PDF document text
  • http://sumbulefendiegitimvakfi.com/resimler/files/fedajekazogadi.pdfIn PDF document text
  • http://eotp.info/sites/default/files/fck/file/45387371110.pdfIn PDF document text
  • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160960bf207ad3---xejurotanabewelenudu.pdfIn PDF document text
  • http://machi-tomo.xyz/js/ckfinder/userfiles/files/xupelupudinidelenilo.pdfIn PDF document text
  • http://crossfit28.com.s125853.gridserver.com/siteuploads/editorimg/file/nelalanuxova.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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