Malicious PDF — malware analysis report

Heuristics 7

• Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
  Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
• Cracked-software lure uses shortlink/download gateway critical PDF_CRACKED_SOFTWARE_SHORTLINK_LURE
  PDF visible text advertises a crack, serial number, archive, or pirated-software download and pairs it with a shortlink or encoded download gateway. This is a high-confidence social-engineering carrier for unwanted software or droppers; the PDF itself is not a parser exploit.
• PDF links to document on public blob storage high PDF_PUBLIC_BLOB_DOCUMENT_LINK
  PDF contains a clickable action to a document payload hosted on public blob/object storage. Shared object storage can be used legitimately, so this rule is suspicious rather than conclusive unless paired with lure text or other phishing indicators.
• PDF links to a cracked-software download doorway (base64-obfuscated) high PDF_CRACKED_SOFTWARE_DOWNLOAD_DOORWAY
  PDF's embedded link hides a pirated-software title as a base64 blob inside the URL path/query (and/or carries the ``download|`` doorway-template marker), rather than in visible text. This is a TCPDF-generated SEO doorway that ranks for software-piracy searches and funnels users to fake 'crack/keygen' download pages distributing adware, potentially-unwanted programs, or droppers. The base64 encoding is deliberate obfuscation to evade plaintext lure rules; the PDF itself carries no parser exploit — the risk is the linked crack-download destination.
• 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
• 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://dormister.com/amite/contemporaries/draft/ZHJwdSBiYXJjb2RlIHNvZnR3YXJlIGNyYWNrIGRvd25sb2FkZHJ.rubberized.experi.ZG93bmxvYWR8ZDd4TVdaemMzWjhmREUyTmpJMk9EQXpPVEI4ZkRJMU9UQjhmQ2hOS1NCWGIzSmtjSEpsYzNNZ1cxaE5URkpRUXlCV01pQlFSRVpk.leukemias/ PDF link annotation

  • https://storage.googleapis.com/shamanic-bucket/50602809-epson_t60_printer_service_required_software_free_downloadins.pdfIn PDF document text
  • https://immanuelglobalwp.com/league-of-angels-3-hack-upd/In PDF document text
  • http://www.happytraveler.it/wp-content/uploads/2022/09/Monster_Meg_And_Dia_Original_Mp3_BETTER_Download.pdfIn PDF document text
  • http://www.covenantmiami.org/wp-content/uploads/2022/09/gildphi.pdfIn PDF document text
  • https://vendredeslivres.com/wp-content/uploads/2022/09/Zanzarah_The_Hidden_Portal_Key_Serial_Number.pdfIn PDF document text
  • https://vogblog.wales/wp-content/uploads/2022/09/Anno_1404_Venice_Gold_Edition_MULTi7_PL_1033650_Trainer_Game_Hack.pdfIn PDF document text
  • https://buycoffeemugs.com/wp-content/uploads/2022/09/cordae.pdfIn PDF document text
  • https://ourwebsitetest.es/2022/09/13/3d-driving-school-license-error-crack-fix/In PDF document text
  • http://financetalk.ltd/?p=32583In PDF document text
  • https://p2p-tv.com/wintrack-10-crackhttps-scoutmails-com-index301-php-k-wintrack-10-crack-exclusive/In PDF document text
  • http://rastaan.com/?p=23155In PDF document text
  • https://zurisdream.com/wp-content/uploads/2022/09/imeltheb.pdfIn PDF document text
  • https://teetch.co/wp-content/uploads/2022/09/gaetfia.pdfIn PDF document text
  • https://lsvequipamentos.com/wp-content/uploads/2022/09/An_Introduction_To_Embedded_Systems_By_Shibu_K_V_Pdf.pdfIn PDF document text
  • https://ryhinmobiliaria.co/wp-content/uploads/2022/09/Fabriwin_Torrentrar.pdfIn PDF document text
  • http://rastadream.com/?p=73845In PDF document text
  • https://www.iltossicoindipendente.it/wp-content/uploads/2022/09/leewal.pdfIn PDF document text
  • https://myhrhub.org/wp-content/uploads/2022/09/Marlon_AsherLocked_Out_2006_FREE_Full_Album_Zip.pdfIn PDF document text
  • https://www.rutaecologica.com/wp-content/uploads/2022/09/kahoxee.pdfIn PDF document text
  • https://rednails.store/industrial-robotics-by-mikell-p-groover-pdf/In PDF document text
  • http://dormister.com/amite/contemporaries/draft/zhjwdsbiyxjjb2rlihnvznr3yxjlignyywnrigrvd25sb2fkzhj.rubberized.experi.zg93bmxvywr8zdd4tvdaemmzwjhmreuytmpjmk9eqxppvei4zkrjmu9uqjhmq2hos1ncwgizsmtjsepsyznnz1cxae5urkpruxlcv01pqlfsrvpk.leukemias/In PDF document text
  • http://www.tcpdf.orgIn PDF document text
  • 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/xap/1.0/In PDF document text
  • http://ns.adobe.com/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://www.aiim.org/pdfa/ns/extension/In PDF document text
  • http://www.aiim.org/pdfa/ns/schema#In PDF document text
  • http://www.aiim.org/pdfa/ns/property#In PDF document text
  • http://www.aiim.org/pdfa/ns/id/In PDF document text

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