Malicious PDF — malware analysis report

Heuristics 6

• 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 http://qianxish.com/ckfind_image/files/10526577271.pdf In PDF document text

  • http://centralcogtc.com/uploads/file/farorudesu.pdfIn PDF document text
  • https://manage3.realtourvision.com/rtv/ckfinder/userfiles/images/files/48515333303.pdfIn PDF document text
  • http://shepardinteriordesign.com/rw/upload/file/31042317560.pdfIn PDF document text
  • http://albino-pitti.com/pub_img/file/dilopefidi.pdfIn PDF document text
  • http://imbirimbir.ru/files/gijexixikisetefudodudo.pdfIn PDF document text
  • http://susutour.com/userfile/file/kafubimutagoxe.pdfIn PDF document text
  • http://ambulatorioveterinariopisillibertozzi.eu/userfiles/files/lebujarujiwepijok.pdfIn PDF document text
  • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/1614b72fa5a670---57431685639.pdfIn PDF document text
  • http://askaudit.ru/price/38864642878.pdfIn PDF document text
  • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1614a2a814612a---57521340489.pdfIn PDF document text
  • http://distant-property.ru/fck_editor_files/files/87598441696.pdfIn PDF document text
  • https://borgopitti.it/userfiles/file/81441386075.pdfIn PDF document text
  • http://wcsps.com.tw/ckfinder/userfiles/files/sewabux.pdfIn PDF document text
  • http://xn--h1aaebajlcgx.xn--p1ai/sadm_files/bemusagosotugos.pdfIn PDF document text
  • http://slenderclub.cz/ckfinder/userfiles/files/46125282745.pdfIn PDF document text
  • http://104408017.linker.tw/files/9849511102.pdfIn PDF document text
  • http://erbaytag.com/resimler/files/48792088905.pdfIn PDF document text
  • http://snieznik.pl/userfiles/file/58847318157.pdfIn PDF document text
  • http://yogaschoolofkerala.com/photos/editor/files/34863700360.pdfIn PDF document text
  • http://wskinbody.com/data/boardData/files/15308935822.pdfIn PDF document text
  • http://uniroll.pl/user_images/file/65716271087.pdfIn PDF document text
  • https://rugerwafers.com/demo/ruger/beta/userfiles/files/33617226501.pdfIn PDF document text
  • https://kingbakerypans.com/userfiles/file/jizodulil.pdfIn PDF document text
  • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614cf663453ac---50071015481.pdfIn PDF document text
  • http://language-coach.pl/uploads/files/25900763508.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=1000+free+games+playPDF 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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