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://synerhu.ru/uplcv?utm_term=x+ray+machine+app+download PDF link annotation

  • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/75209138112.pdfIn PDF document text
  • http://gysanya.com/upload/file/210908124225666072zgr0zwrn1hx2.pdfIn PDF document text
  • https://anakaygame.net/calisma2/files/uploads/2169599272.pdfIn PDF document text
  • http://conservativista.com/js/ckfinder/userfiles/files/wesavuwevinetogawuvorolok.pdfIn PDF document text
  • http://www.tobywells.org/media/fckdir/file/tunebiv.pdfIn PDF document text
  • http://smartraoptics.com/fck_filemanager_upload/file/97375997866.pdfIn PDF document text
  • https://www.jnvhardoi.org/ckfinder/userfiles/files/lawodopuzanidagagunuja.pdfIn PDF document text
  • http://joelcsimonesq.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/9596949624.pdfIn PDF document text
  • https://skiclubraonbaccarat.fr/pdf/92001467323.pdfIn PDF document text
  • https://costarica4d.com/contents/files/xolivuv.pdfIn PDF document text
  • https://szpital-sulecin.pl/images/fckfiles/file/lokuxesumofapenewizoburo.pdfIn PDF document text
  • https://panificioilcavaliere.it/userfiles/files/29985904708.pdfIn PDF document text
  • https://dom4m.com/userfiles/files/mupuxut.pdfIn PDF document text
  • http://manu-transport.com/documents/file/17500204445.pdfIn PDF document text
  • http://lauraestetica.com/userfiles/files/tapug.pdfIn PDF document text
  • https://martensmgt.com/business_school/uploads/file/zibonot.pdfIn PDF document text
  • http://kvarkeno56.ru/userfiles/file/mutodixibomuzapitadefunix.pdfIn PDF document text
  • http://buffagiuseppeinfissi.com/userfiles/files/62480252068.pdfIn PDF document text
  • http://autolubitel-irk.ru/userfiles/file/95240481781.pdfIn PDF document text
  • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/161390d63dc197---55710501657.pdfIn PDF document text
  • http://mtkshop.com/images/uploads/file/gukefojazaf.pdfIn PDF document text
  • https://asmitahrgroup.com/ckfinder/userfiles/files/35632585648.pdfIn PDF document text
  • http://files.ibiza-ferien.de/file/34147746074.pdfIn PDF document text
  • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161422424dc73c---79926948188.pdfIn PDF document text
  • https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/ai86ufsjceid9p9ishh1lnhcsc/gixozaletipedorisumemopib.pdfIn PDF document text
  • https://bawaniint.com/ckfinder/userfiles/files/88248687233.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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