Malicious PDF — malware analysis report

Heuristics 7

• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c16e4210808---fiwuduwabazifepet.pdf In PDF document text

  • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16080d7976baa3---39349653045.pdfIn PDF document text
  • http://heureka-cz.eu/files/58591001861.pdfIn PDF document text
  • http://aimecostruzioni.it/userfiles/files/16262564597.pdfIn PDF document text
  • http://odontoflash.eu/userfiles/files/75268054832.pdfIn PDF document text
  • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607eb3447ee58---47847332888.pdfIn PDF document text
  • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160845e4bcb885---momezigugekuleju.pdfIn PDF document text
  • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160d9e528dd0bb---sikomomadefum.pdfIn PDF document text
  • http://inventory-acepipe.com/images/uploads/files/diwinomuwadafixafegi.pdfIn PDF document text
  • https://toyotaautobody.com/ckfinder/userfiles/files/kodefukovaditex.pdfIn PDF document text
  • http://andlupa.com/userfiles/file/jemibozivoxeperep.pdfIn PDF document text
  • http://citra.cl/userfiles/file/81860206703.pdfIn PDF document text
  • http://drairtools.com/ckfinder/userfiles/files/57085586678.pdfIn PDF document text
  • http://unipsyclinic.com/userfiles/file/20210809232746.pdfIn PDF document text
  • http://medtravel.pro/images/hand_uploaded/files/zojevu.pdfIn PDF document text
  • https://www.superioreagle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a79a7838b74---lupawulelusagivis.pdfIn PDF document text
  • http://michaelwilliamslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/nowojutufesonijamosi.pdfIn PDF document text
  • https://electroagro.es/pub/files/bobodobipofugekelarep.pdfIn PDF document text
  • http://lucidarepavimentimarmogenovaealessandria.it/userfiles/files/fuzijexagiginawopo.pdfIn PDF document text
  • http://www.misshandicap.ch/wp-content/plugins/formcraft/file-upload/server/content/files/1609875591cbaa---bixabudigigokoj.pdfIn PDF document text
  • http://auto-spec.ca/fck/file/kepeganezulagejomunivap.pdfIn PDF document text
  • https://www.coconutlodge.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b89f283d66---24867632944.pdfIn PDF document text
  • http://studiocariola.com/userfiles/files/wulifisanelanijujatemit.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=greensleeves+partitura+piano+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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