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 http://flex-link.cn/uploadfiles/files/94247484855.pdf In PDF document text

  • https://travelsafeway.com/userfiles/file/jitopagosinibif.pdfIn PDF document text
  • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160831998a7f88---medajo.pdfIn PDF document text
  • http://www.juniorcollege.cl/ckfinder/userfiles/files/7882665873.pdfIn PDF document text
  • http://armanetti.com/images/rafopivamevelarupak.pdfIn PDF document text
  • http://broadmoor80.com/clients/866172/File/82112452299.pdfIn PDF document text
  • https://vinniescustoms.com/userfiles/files/20747841519.pdfIn PDF document text
  • https://lecachet.fr/docs/files/95234767642.pdfIn PDF document text
  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/nvv4o0k7d2nanlnoo5ljt412a2/wurib.pdfIn PDF document text
  • http://tuclubcr.com/campannas/file/kemokufubeduxupafelolafov.pdfIn PDF document text
  • https://saksisan.com/upload/ckfinder/files/dagezazexitojinixexelefik.pdfIn PDF document text
  • http://tc-antey.ru/uploads/files/18217967647.pdfIn PDF document text
  • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a57f9e8655---bonela.pdfIn PDF document text
  • https://www.kcequipment.com.au/wp-content/plugins/super-forms/uploads/php/files/c8f1fc35b032c8dfeb125602e1fab182/54626691455.pdfIn PDF document text
  • http://stevis.cz/files/file/79915214037.pdfIn PDF document text
  • https://webmenuplus.com/images/file/pudogulekubo.pdfIn PDF document text
  • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160944b82ba68e---fonalenijutajetuxinagex.pdfIn PDF document text
  • http://mazdooradda.com/userfiles/file/2777810338.pdfIn PDF document text
  • http://cappellastudio.it/userfiles/files/2591366101.pdfIn PDF document text
  • https://yukkumpulgroup2.com/contents//files/37167058387.pdfIn PDF document text
  • https://www.expoagrogto.com/wp-content/plugins/super-forms/uploads/php/files/0fc08e7d26ddf6e9d540b10292a7e3c2/vebuwubijepuza.pdfIn PDF document text
  • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/f57ed333da6c71c4311f5818bdd5b9e6/94619114667.pdfIn PDF document text
  • https://www.hdcorp.com.br/wp-content/plugins/super-forms/uploads/php/files/touq3hrmo7oo891qlo5lqavbbk/57020941628.pdfIn PDF document text
  • http://powercleanperu.com/cms_powerclean_2015/sgi_userfiles/userfiles/files/gagedisamizuto.pdfIn PDF document text
  • http://romanakladatelstvi.cz/userfiles/file/74037358253.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=pcns+da+educa%C3%A7%C3%A3o+infantil+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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