Malicious PDF — malware analysis report

Heuristics 8

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
  PDF has 1 image(s), only 2 text block(s), carries a click-outward action, and is only 69 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
• 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 http://pappteam.hu/userfiles/file/38937206620.pdf In PDF document text

  • https://www.vconsole.com/ckfinder/files/tabodunenavowujupu.pdfIn PDF document text
  • https://menuiserie-sainte-anne.fr/userfiles/file/taberuwovomebadujerosi.pdfIn PDF document text
  • http://school15-tyumen.ru/f/13437047067.pdfIn PDF document text
  • http://qdxqw.com/uploadfile/file/28093704336.pdfIn PDF document text
  • http://nurugelexport.com/ckfinder/userfiles/files/kosudotebavamuxu.pdfIn PDF document text
  • http://integrotech.eu/zdjecia/file/wejer.pdfIn PDF document text
  • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614bd16bde5bc---98641567971.pdfIn PDF document text
  • https://eghamatkade.com/basefile/eghamatkadecom/files/92621389728.pdfIn PDF document text
  • http://tutaylamhet.com/storage/ckfinder/files/99513077207.pdfIn PDF document text
  • http://ajivikafinance.com/userfiles/file/gosadetovugosadisudoge.pdfIn PDF document text
  • https://tierrettung-in-katalonien.org/ckfinder/userfiles/files/gedot.pdfIn PDF document text
  • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/1b2nt2rtrmraf6grdov44rdv96/5047886986.pdfIn PDF document text
  • http://ambulatorioveterinariobubiniregini.eu/userfiles/files/xaxozilugudivogevu.pdfIn PDF document text
  • http://cbgnfinance.com/userfiles/file/8391611128.pdfIn PDF document text
  • http://borneneskontor-landsforening.dk/userfiles/file/29669094174.pdfIn PDF document text
  • http://www.prunay-en-yvelines.fr/ckfinder/userfiles/files/54865371879.pdfIn PDF document text
  • http://laboratorioshamalab.com/userfiles/file/fuzofuvapufuvupujasaj.pdfIn PDF document text
  • https://vietrocknet.org/app/webroot/img/files/pigufefi.pdfIn PDF document text
  • https://fibra-optica.ro/ckfinder/userfiles/files/jupefopapodirafixogi.pdfIn PDF document text
  • http://doubles301.jp/files/ckeditor/files/92777597541.pdfIn PDF document text
  • http://wpchkg.com/upload/image/file/napulatimatosozajer.pdfIn PDF document text
  • https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/gpiv6j4878vm82jcc3ctm8b0gi/14119632578.pdfIn PDF document text
  • https://markyatirim.com/resimler/files/guxusafazebokanepal.pdfIn PDF document text
  • https://doanandieuduong295doson.vn/namthuan/images/news/files/juzakulidusemawapovuke.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=best+indian+android+gamesPDF 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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