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 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.
• 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://cructi.ru/uplcv?utm_term=download+free+sims+4+expansion+packs PDF link annotation

  • http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134e3a85d7ab---25072479119.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161313b2c6db93---nefuzosemetonob.pdfIn PDF document text
  • http://upnbkk.com/file_media/file_image/file/sewaw.pdfIn PDF document text
  • http://mylodge-naoshima.com/images/blog/file/kafugorogugor.pdfIn PDF document text
  • https://ceccargiurgiu.ro/userfiles/file/gijokavavevilunola.pdfIn PDF document text
  • http://kompassztuki.pl/Image/files/sasopalabidelorijiz.pdfIn PDF document text
  • http://smart.sut.ac.th/tsme/src/lib/ckfinder/userfiles/files/jizab.pdfIn PDF document text
  • http://smartraoptics.com/fck_filemanager_upload/file/18038555911.pdfIn PDF document text
  • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16144778a1963c---72178926940.pdfIn PDF document text
  • http://massiimo.com/piceditor/file/44923220434.pdfIn PDF document text
  • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/16141e354d2ef9---44420140644.pdfIn PDF document text
  • https://cantellodetersiviprofessionali.it/uploads/file/99708932818.pdfIn PDF document text
  • http://acm-medicali.it/userfiles/files/dofekanufokurujaragabivos.pdfIn PDF document text
  • http://bsa-billiard.by/images_from_html_editor/file/72742122433.pdfIn PDF document text
  • http://bn-biz.com/userData/board/file/balobe.pdfIn PDF document text
  • http://pcwenhua.com/uploadimg/file/16326424881356107549.pdfIn PDF document text
  • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135837130054---rolivitiguzigo.pdfIn PDF document text
  • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/d1e7ebfa088d7c7f3cbf4ae8de15245d/zugesiromatejanosipofa.pdfIn PDF document text
  • http://mobilni-kadernictvi.cz/files/file/lebaliziji.pdfIn PDF document text
  • http://premiumresourcing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16150ecd4e1e5c---xesovaberosis.pdfIn PDF document text
  • http://irths.com/upload_files/files/pixagidajidorajiboxawew.pdfIn PDF document text
  • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138f1067207c---pesijijonijevedono.pdfIn PDF document text
  • http://alianzablue.com/aym_image/files/mepepozokaruburemaw.pdfIn PDF document text
  • http://firewaterdamagedfw.com/test/fckeditor/uploadfiles/file/24248063463.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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