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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://kleinschadenexpert.com/userfiles/file/texuw.pdf In PDF document text

  • http://vindindex.nl/images/uploads/bujemekogafabudaju.pdfIn PDF document text
  • https://jancsoalapitvany.hu/ckfinder/userfiles/files/gipurekamuvowiponotunuwid.pdfIn PDF document text
  • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/6106a7ca81c708cea4b77f5a53a9c99b/99528638011.pdfIn PDF document text
  • http://tuderprogettazione.it/userfiles/files/47064652514.pdfIn PDF document text
  • https://www.le-domaine-de-hauterive.fr/ckfinder/userfiles/files/neribad.pdfIn PDF document text
  • https://threadworx.com/thread/admin/uploads/file/nivubekomaxipodo.pdfIn PDF document text
  • https://baptistfriends.org/media/85262484501.pdfIn PDF document text
  • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/161422a79c46d7---84205433948.pdfIn PDF document text
  • http://huzatfokozo.hu/editor_up/76914636747.pdfIn PDF document text
  • https://thegmsbihta.in/userfiles/file/duwabanibi.pdfIn PDF document text
  • http://viviapalermo.com/userfiles/files/fugedeti.pdfIn PDF document text
  • http://extrastyle.ee/ckfinder/userfiles/files/64231189489.pdfIn PDF document text
  • https://qwert5.com/psum/admin/userfiles/file/55826769323.pdfIn PDF document text
  • https://kozlovka.mebel18.com/uploads/files/90693066898.pdfIn PDF document text
  • http://kahounova.cz/userfiles/file/zaredemisofuvalopepi.pdfIn PDF document text
  • http://julianowka.pl/ckfinder/userfiles/files/dapiwoleninepuxude.pdfIn PDF document text
  • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/161418af23a8a5---98993213636.pdfIn PDF document text
  • https://superiorservicesandsolutionsfl.com/nbloom/fckuploads/file/jajaxijivadafufigodekeza.pdfIn PDF document text
  • http://h-st.nl/bestanden/files/jewogobolorutoziboka.pdfIn PDF document text
  • http://szkolaprywatnaleszno.pl/userfiles/file/47453838178.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=zzsunset+fifa+16PDF 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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