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://coretry.ru/uplcv?utm_term=google+docs+for+android+phone PDF link annotation

  • http://grafichesirio.com/userfiles/files/gofaxomizaj.pdfIn PDF document text
  • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130f7102c252.pdfIn PDF document text
  • http://greenhere.cn/upload/ckimg/files/202109042346515130.pdfIn PDF document text
  • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613bdd92d2019---14214582.pdfIn PDF document text
  • https://macintosh-szerviz-javitas.nuttydog.hu/ckfinder/userfiles/files/nisumunisonebezefitakune.pdfIn PDF document text
  • http://xn--80aafbanafwvcftiqfecrg2a.xn--p1ai/pict/file/31963749766.pdfIn PDF document text
  • http://gmkms.net/upfile_editor/2021/files/rejipador.pdfIn PDF document text
  • https://blokhol.com/upload/files/69519346850.pdfIn PDF document text
  • http://flamefitnessstudio.com/cewit/images/file/24621302111.pdfIn PDF document text
  • http://indianspringhomes.net/userfiles/files/52530859818.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/4kigilemqd3om8f3utjqocv363/82551744918.pdfIn PDF document text
  • http://ranch.pl/files/file/mimiloxunimo.pdfIn PDF document text
  • http://pm-property.pl/userfiles/file/powabipineto.pdfIn PDF document text
  • http://risme.vn/files/64260370188.pdfIn PDF document text
  • http://masonhn.com/d/files/94326259076.pdfIn PDF document text
  • https://www.stock2morrow.com/ckfinder/userfiles/files/546207649.pdfIn PDF document text
  • https://luminex.pl/upload/file/46472975411.pdfIn PDF document text
  • http://texmet.pl/userimages/file/34083986831.pdfIn PDF document text
  • https://transturist.ba/ckeditor/ckfinder/files/files/xolowifamew.pdfIn PDF document text
  • http://pokwuttibut.com/file_media/file_image/file/revegutad.pdfIn PDF document text
  • https://presstone.hu/userfiles/file/duwikedaxolakikigezi.pdfIn PDF document text
  • http://veiligheidssloten.nl/ckfinder/userfiles/files/kevozatifobaxawajitati.pdfIn PDF document text
  • http://naszemotyle.natura2000.pl/imgturysta/files/87984745774.pdfIn PDF document text
  • https://www.nstoplana.rs/ckfinder/userfiles/files/23948091956.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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