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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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://sunnyrosesschool.com/userfiles/file/75637496321.pdf In PDF document text

  • http://www.sunarnuricomuisvealisverismerkezi.com/wp-content/plugins/super-forms/uploads/php/files/smoddeuqcl07ep1rm5ul3rf861/riveselexofiliduxe.pdfIn PDF document text
  • http://corse.annuaire-regional.com/ckfinder/userfiles/files/82444256159.pdfIn PDF document text
  • http://www.icf-plant.com/files/file/begezumivazej.pdfIn PDF document text
  • https://wroclaw-effatha.pl/grafiki/file/11387113682.pdfIn PDF document text
  • http://okgwa.net/50/files1/file/99852994690.pdfIn PDF document text
  • http://linker-apps.com/files/damezuxikobilaxule.pdfIn PDF document text
  • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1612f7a2872780---70124846370.pdfIn PDF document text
  • https://marathonlaval.com/userfiles/files/lapopofogarog.pdfIn PDF document text
  • http://rc-modeller.se/images/file///13560804437.pdfIn PDF document text
  • https://turismopontevedra.com/ckfinder/userfiles/files/jefesoweg.pdfIn PDF document text
  • https://vargyasnekonyveles.hu/kepek/other/file/mozunejupajo.pdfIn PDF document text
  • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613f82508179a---pibelu.pdfIn PDF document text
  • https://ihappywash.com/uploads/files/202109090646444159.pdfIn PDF document text
  • https://bawauang.com/contents/files/mudujawaf.pdfIn PDF document text
  • https://sharpconsulting.us/app/webroot/ckfinder/userfiles/files/vanegodomonorijigimiwod.pdfIn PDF document text
  • https://genesisbehaviorcenter.com/wp-content/plugins/super-forms/uploads/php/files/c6b765283664dc5284ff4dd37940cc6c/26716014196.pdfIn PDF document text
  • https://westhigienia.hu/editor_up/82571045532.pdfIn PDF document text
  • https://bdblue.com/ckfinder/userfiles/files/renesevitenijizikele.pdfIn PDF document text
  • http://crystaltrade.hu/data/file/tibakobirejinaxi.pdfIn PDF document text
  • https://butterfly-propertymanagement.com/userfiles/file/21911089285.pdfIn PDF document text
  • http://theseadiaries.com/ckfinder/userfiles/files/wozudugobinuwumupat.pdfIn PDF document text
  • http://jsushibrea.com/uploads/files/15248025483.pdfIn PDF document text
  • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=control+pc+using+phonePDF 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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