Malicious PDF — malware analysis report

Heuristics 6

• 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://shrmivirtual.org/wp-content/plugins/super-forms/uploads/php/files/cbffaacb256c3a1df8188e286904ec28/kigudewesakigu.pdf In PDF document text

  • http://asbu.net/uploads/FCK_files/file/62343663745.pdfIn PDF document text
  • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/s5jpilrve3psa7dko396bq56vq/39804616752.pdfIn PDF document text
  • http://portalpr-b2b.es/img/user///file/_0272400001624774399.pdfIn PDF document text
  • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089ef6728e6d---88969974946.pdfIn PDF document text
  • http://interreg-ipa-husrb.com/downloads/86853747061.pdfIn PDF document text
  • https://chptravel.ir/data/file/demizixekod.pdfIn PDF document text
  • http://debandhelder.nl/ckfinder/userfiles/files/lateligetufiponim.pdfIn PDF document text
  • http://kstarsmall.net/userfiles/file///turilezoxazode.pdfIn PDF document text
  • http://www.aadhar-interior.com/userfiles/file/wetixutiga.pdfIn PDF document text
  • https://masukpt1.com/contents//files/99657057928.pdfIn PDF document text
  • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c159b149c6e---38757395228.pdfIn PDF document text
  • http://brucemaymemorialgolftournament.com/clients/d/d2/d245e0393a5bbb16d67b82808c007790/File/tuludegugo.pdfIn PDF document text
  • http://naturallabs.fr/userfiles/file/bilalexisopixozube.pdfIn PDF document text
  • https://equator-maritime.com/userfiles/file/jutogemiz.pdfIn PDF document text
  • https://airbays.com/userfiles/file/99727527855.pdfIn PDF document text
  • http://brukbet.com/user_images/file/sedanotulejixikidij.pdfIn PDF document text
  • http://fontanarosaserigrafia.it/userfiles/file/40495180313.pdfIn PDF document text
  • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160da1b1a141aa---29562958939.pdfIn PDF document text
  • https://www.varisistanbul.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d190c004d2---76140465141.pdfIn PDF document text
  • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095edb2ee6fb---tavobifaparof.pdfIn PDF document text
  • http://scouttautomotive.com/editor_uploads/system/files/netezug.pdfIn PDF document text
  • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/v3vr2kti7qeu383u9np4qmuc8l/25081585966.pdfIn PDF document text
  • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/1b33677d212921c6f149beb22be8cda1/16985781427.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=libro+de+schwarcz+obstetricia+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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