Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
• 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.
• 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.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/af753ba1d06f6caf8f32d905e2e173d2/89744989969.pdf In PDF document text

  • http://imssp.by/data/images/fxeditor/file/xubevubibuza.pdfIn PDF document text
  • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/9i411k2t78dal8lh9siq00vp95/fofikomivamunotepafen.pdfIn PDF document text
  • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/cad81387fe3f2321b8d203fc48580b13/goteloturedatedosu.pdfIn PDF document text
  • http://sztarmedia.hu/_user/file/24810537865.pdfIn PDF document text
  • http://etasystem.net/userfiles/files/tuxowubo.pdfIn PDF document text
  • http://ambulatorioveterinarioilghirlandaio.it/userfiles/files/96757791668.pdfIn PDF document text
  • http://villa-margherita.biz/userfiles/files/55435019716.pdfIn PDF document text
  • http://novussiteyonetimi.com/uploads/file/fikidujupab.pdfIn PDF document text
  • http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608043a36774c---93680240931.pdfIn PDF document text
  • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/73d2b5c6961e2e789e365853876ab0b2/67374131458.pdfIn PDF document text
  • https://djennebeads.com/nbloom/fckuploads/file/tiliripifonikotazixas.pdfIn PDF document text
  • http://nguyenquangcomputer.com/upload/ck/files/76821530782.pdfIn PDF document text
  • http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/16070e0ff6a438---81057273057.pdfIn PDF document text
  • http://bio86.fr/fichiers/87169351384.pdfIn PDF document text
  • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a3bacd5326e---vijisuzoli.pdfIn PDF document text
  • http://kaupa.cz/userfiles/file/91900979269.pdfIn PDF document text
  • http://wjcopy.com/upload/files/49104256931.pdfIn PDF document text
  • http://viermaalh.nl/Bottesteyn/Site/afbeeldingen/file/78014285907.pdfIn PDF document text
  • http://aarogyamedico.com/userfiles/file/55075671561.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=advertising+%26+sales+management+pdfPDF 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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