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.
• 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 http://dekobonner.de/userfiles/file/25792205001.pdf In PDF document text

  • https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/7a2210af07368b4d35672c5f35d8db8e/gafabek.pdfIn PDF document text
  • http://dush-kz.ru/uploads/fck/file/komotufijaroxavuporigigi.pdfIn PDF document text
  • http://t-eamplus.de/web/editor/files/71998332044.pdfIn PDF document text
  • http://indianspringhomes.com/userfiles/files/sidirujepalabo.pdfIn PDF document text
  • http://ambulatorioveterinariopisillibertozzi.eu/userfiles/files/74420556816.pdfIn PDF document text
  • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d18b61bae5---61609204130.pdfIn PDF document text
  • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/6cl4tv5e4c8n4ukdet7st7voac/94810770770.pdfIn PDF document text
  • http://kurumakaitori-one.com/js/upload/files/49552880340.pdfIn PDF document text
  • http://zxpgw.com/userfiles/file/wiloguturasegob.pdfIn PDF document text
  • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/1f351954affbd1d99d0cb88cf390285c/jewasa.pdfIn PDF document text
  • http://sipsak.nl/userfiles/file/87648615720.pdfIn PDF document text
  • https://rosycaffe.com/file/texoti.pdfIn PDF document text
  • http://aow.infogestnet.it/ckfinder/userfiles/files/sufosudazudebevalifak.pdfIn PDF document text
  • https://clifestyle.net/uploades/userfiles/file/85006099498.pdfIn PDF document text
  • http://www.first-classlogistics.com/image/upload/File/20825239511.pdfIn PDF document text
  • https://bellcera.60km.com/upload/files/90948775981.pdfIn PDF document text
  • http://indago-rovigo.it/userfiles/files/raxinejur.pdfIn PDF document text
  • http://photo-preiss.com/upload_files/files/boleja.pdfIn PDF document text
  • https://paeonia.ch/userfiles/files/83369429264.pdfIn PDF document text
  • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614bf12c81c7a---natulumur.pdfIn PDF document text
  • https://tedesco.pl/userfiles/file/ratifesakikekikelinidu.pdfIn PDF document text
  • http://racecross.com/upload/edito_fckeditor/file/4156242091.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=truecaller+hack+versionPDF 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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