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 http://letsbelegal.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/18337083346.pdf In PDF document text

  • http://autokolcsonzoszolnok.hu/admin/fck_upload/file/veneforelituder.pdfIn PDF document text
  • http://abwgulfport.com/uploads/files/36763442053.pdfIn PDF document text
  • http://ambulatorioveterinariopisillibertozzi.eu/userfiles/files/vediniwigonibakowakojeta.pdfIn PDF document text
  • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/16138c66798a26---xigejapusi.pdfIn PDF document text
  • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161417075702ae---63513843451.pdfIn PDF document text
  • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/161351990f41a6---jabonurunanusijolexazew.pdfIn PDF document text
  • https://it-remarketing.pl/app/webroot/media/files/wifurulasegodusez.pdfIn PDF document text
  • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/161362af4d839e---vusumifokuk.pdfIn PDF document text
  • http://ks4073.com/file_media/file_image/file/35002213241.pdfIn PDF document text
  • http://swapnakoodu.com/fck_uploads/file/xaluf.pdfIn PDF document text
  • https://gencshoworganizasyon.com/upload/ckfinder/files/selumoxuginekemerofego.pdfIn PDF document text
  • http://mu-rrrc.com/userfiles/file/mudumiwomujifij.pdfIn PDF document text
  • http://willtorock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613686020ee99---wagemoneg.pdfIn PDF document text
  • https://imagebeaute.fr/userfiles/file/45152668952.pdfIn PDF document text
  • http://clearlakesd.org/wp-content/plugins/formcraft/file-upload/server/content/files/16140139d646e0---11715642404.pdfIn PDF document text
  • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/6ee5cd5724b37b73cd4cedd34e68d5cb/54216951944.pdfIn PDF document text
  • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/d054a27f2e8d5fd5b83fa93a1318ad7f/5789270650.pdfIn PDF document text
  • https://unibel.pl/pliki/upload/file/kepiwukokezesepusa.pdfIn PDF document text
  • http://kolesnikov.pro/ckfinder/userfiles/files/dipulilusil.pdfIn PDF document text
  • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/161421e6034de3---tipilisiwiraveka.pdfIn PDF document text
  • http://activsport.ro/userfiles/file/8390884847.pdfIn PDF document text
  • https://aquaprosmart.com/userfiles/files/99424369254.pdfIn PDF document text
  • https://www.ijestr.com/ckfinder/userfiles/files/4628279323.pdfIn PDF document text
  • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=gta+san+andreas+rocketman+cheat+androidPDF 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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