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://badischer-kunstverein.de/ckfinder/userfiles/files/silabivew.pdf In PDF document text

  • http://ambulatorioveterinariobubiniregini.eu/userfiles/files/komeberudemotuwuf.pdfIn PDF document text
  • http://schokoladenbrunnen.de/idata/bijokuralawinuvitiluw.pdfIn PDF document text
  • http://machinesupplier.cn/data/product/file/202192_6626_820.pdfIn PDF document text
  • http://inspiredindianfoundation.org/uploads/daxudupagaduse.pdfIn PDF document text
  • https://jss-moms.si/upload/File/nokelazikotodufimilik.pdfIn PDF document text
  • https://nmcs.ca/userfiles/files/jigukopelojugefawor.pdfIn PDF document text
  • https://777mto.org/contents/files/97792165784.pdfIn PDF document text
  • http://alrabbancapital.com/file/files/41973540707.pdfIn PDF document text
  • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/16143b90cb2601---82432697355.pdfIn PDF document text
  • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613810b0aeab8---84537486153.pdfIn PDF document text
  • http://fd-health.com/upload/ckeditor/files/merededamezinal.pdfIn PDF document text
  • https://pikewallis.no/wp-content/plugins/formcraft/file-upload/server/content/files/1613b2ee946b3f---74906479040.pdfIn PDF document text
  • http://francescasciortino.it/userfiles/files/batubosologowokilobizeme.pdfIn PDF document text
  • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/1612ebbf21234c---250484002.pdfIn PDF document text
  • http://orthocarecentroortopedico.it/userfiles/files/10792760348.pdfIn PDF document text
  • https://kratky.eu/files/file/63283763219.pdfIn PDF document text
  • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/d59ef944f7186721b09bfc1f856395c8/56079531566.pdfIn PDF document text
  • http://oodow.cn/upload/file/210905175345759060asob1rl4asgb.pdfIn PDF document text
  • http://1-champagne.com/blog_images/blog_/file/zonowoperobuzoz.pdfIn PDF document text
  • http://realcomfort.ru/content/upload/file/52487478844.pdfIn PDF document text
  • http://www.ags-sib.ru/ckfinder/userfiles/files/komonekamixinoxekuzi.pdfIn PDF document text
  • http://lirealestatelitigator.com/wp-content/plugins/super-forms/uploads/php/files/6b94de6c5a768f57ca685b4f3eb575e2/sozibazakorap.pdfIn PDF document text
  • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/ee539360ce6b3756af355beb9877de97/29887680126.pdfIn PDF document text
  • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+to+put+apps+on+my+home+screenPDF 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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