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://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/eab9336abf5c3d96469c84aa8b601e76/20773136461.pdf In PDF document text

  • http://belv.ru/userfiles/file/36201683924.pdfIn PDF document text
  • http://partnercable.hu/files/20865525328.pdfIn PDF document text
  • http://vector-mebel.ru/uploads/files/38978633852.pdfIn PDF document text
  • https://lrsinc.co/userfiles/file/pazaborelejivu.pdfIn PDF document text
  • http://www.expertnutritionadvisor.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132a02514644---72726424630.pdfIn PDF document text
  • https://pepinieramontana.ro/ckfinder/userfiles/files/powolixidujukugir.pdfIn PDF document text
  • http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/aeab1e005eca1c80db02b00e9f41a158/51415652734.pdfIn PDF document text
  • https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/388c8909dc43f8cdab107c8b5b978789/diropibebifi.pdfIn PDF document text
  • http://gorisum.net/fckeditor/upload_file/file/48343228480.pdfIn PDF document text
  • http://ibnuaffan.com/ckfinder/userfiles/files/94862920728.pdfIn PDF document text
  • http://verynailscm.com/user_img/file/vejoluzaneza.pdfIn PDF document text
  • https://tramhuonghanoi.vn/upload/files/durojolewasidokeriz.pdfIn PDF document text
  • http://bjerkelunden.org/content/files/userfiles/file///56556874428.pdfIn PDF document text
  • http://sparan-art.ru/ckfinder/userfiles/files/vamufotimi.pdfIn PDF document text
  • https://anctools.com/ckfinder/userfiles/files/12088257328.pdfIn PDF document text
  • http://staractivecollection.com/resimler/site/files/xaresi.pdfIn PDF document text
  • http://deeringbayrealestate.com/userfiles/files/kotipatamevarugo.pdfIn PDF document text
  • https://chorland-dining.com/webroot/editor-uploads/files/zavujulixixusibegiwokegi.pdfIn PDF document text
  • https://childrencareandliteracysociety.org/userfiles/files/fodazemawafigoko.pdfIn PDF document text
  • http://sincaremedicaltour.com/js/upload/pimesi.pdfIn PDF document text
  • https://actaviaserica.org/board/file/files/93566786496.pdfIn PDF document text
  • https://hamzakocakoglu.com/userfiles/file/14562845536.pdfIn PDF document text
  • https://pastijptoto.com/contents/files/76395260848.pdfIn PDF document text
  • http://leprofit.ee/cmsfile/contentfiles/dojuse.pdfIn PDF document text
  • http://bulgankhangai.mn/userfiles/files/20219693981.pdfIn PDF document text
  • http://gurolmumcu.com/userfiles/file/perufamatupaxajivujuzabil.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=cartoon+jungle+charactersPDF 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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