Malicious PDF — malware analysis report

Heuristics 9

• 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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://irlanc.ru/uplcv?utm_term=retrieve+deleted+android+messages PDF link annotation

  • http://domadoma.cz/userfiles/file/xasagakapezalak.pdfIn PDF document text
  • http://grafichesirio.com/userfiles/files/74403993062.pdfIn PDF document text
  • http://nova-auto.com/upload/25030142355.pdfIn PDF document text
  • http://guss-ex.de/uploads/fck/file/85642554637.pdfIn PDF document text
  • http://allamericannursing.com/userfiles/file/zatelajasebibax.pdfIn PDF document text
  • http://pazzo.jp/js/upload/files/tojidetazixazufalop.pdfIn PDF document text
  • http://namadagaskare.ru/ckfinder/userfiles/files/vetoxavajat.pdfIn PDF document text
  • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131480b98b8b---77514794367.pdfIn PDF document text
  • https://chrmglobal.com/userfiles/file/30526206861.pdfIn PDF document text
  • https://biocoop.legreniervert.fr/ckfinder/userfiles/files/40345015752.pdfIn PDF document text
  • https://silverbirdmarketing.com/pages/images/file/gujobital.pdfIn PDF document text
  • https://tutorlookup.com/ckeditor/ckfinder/userfiles/files/zazatuzudelod.pdfIn PDF document text
  • https://paymentor.nl/uploads/file/13255968471.pdfIn PDF document text
  • http://hvezda-pardubice.cz/files/file/29820620877.pdfIn PDF document text
  • http://veterinarioassociatopacinidallatorre.eu/userfiles/files/mitezexefivolatog.pdfIn PDF document text
  • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/161372e6d65b97---xopiluzetupewilajalufini.pdfIn PDF document text
  • https://lexconsulting.ro/webroot/files/media/bobinotiduwitaz.pdfIn PDF document text
  • https://bawauang.com/contents/files/lizelowanozojovurepoxegop.pdfIn PDF document text
  • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/8crgg8kqajohtngtbtt6nlsh26/42894364657.pdfIn PDF document text
  • http://dasbluemchen.com/pijokugizonuwusofap.pdfIn PDF document text
  • https://hizlipin.com/calisma2/files/uploads/95114469372.pdfIn PDF document text
  • http://www.nisbd.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132336f91b92---bogusinitajedubewafowaniz.pdfIn PDF document text
  • https://sjamsul-hidajat.id/ck_uploads/uploads/files/18002790363.pdfIn PDF document text
  • https://wroclawmodelshow.pl/ckfinder/userfiles/files/65893212230.pdfIn PDF document text
  • http://garant-fond.ru/ckeditor/ckfinder/userfiles/Images/files/luxufil.pdfIn PDF document text
  • http://mobilni-kadernictvi.cz/files/file/23319628029.pdfIn PDF document text
  • http://gekon.net/userfiles/file/jizav.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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