Malicious PDF — malware analysis report

Heuristics 8

• 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.
• Cracked-software lure uses download-gateway redirectors high PDF_CRACKED_SOFTWARE_REDIRECTOR_LINK_FARM
  PDF contains multiple cracked-software/keygen/serial-key lure links together with long encoded download-gateway URLs or known crack-download redirector hosts. This is stronger than generic piracy vocabulary: the document is an SEO lure that funnels users through redirect/download infrastructure commonly used for adware, unwanted software, or droppers.
• 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.
• PDF link farm advertises cracked/pirated software medium PDF_CRACKED_SOFTWARE_LURE
  PDF contains many clickable links whose targets use cracked-software, keygen, serial-key, or warez vocabulary. These are SEO-spam lure documents that rank for software-piracy searches and route users to fake 'crack' download pages distributing potentially-unwanted programs, adware, or droppers. 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
• 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://signforcover.com/akadema/VGVsZWNoYXJnZXIgQ292YWRpcyAxMyBBdmVjIENyYWNrZWQVGV/collidenfl.impels.balamory.ZG93bmxvYWR8SUgxYjI0d2ZId3hOalk1TXpJME9URXlmSHd5TlRrd2ZId29UU2tnVjI5eVpIQnlaWE56SUZ0WVRVeFNVRU1nVmpJZ1VFUkdYUQ/riesling/taco/ PDF link annotation

  • https://discovery.info/tolerance-data-2009-2-keygen-full-torrent/In PDF document text
  • https://newsafrica.world/2022/11/prototype-2-proper-crack-portable-only-23/In PDF document text
  • https://joyfuljourneyresources.net/wp-content/uploads/2022/11/Solucionario_Fundamentos_De_Sistemas_Digitales_Thomas_Floyd_.pdfIn PDF document text
  • http://songskriti.com/wp-content/uploads/2022/11/Trimble_Tekla_Structures_2019_Environments_Free_Download.pdfIn PDF document text
  • https://www.riobrasilword.com/2022/11/24/best-crack-delphicbuilder-xe2-4504/In PDF document text
  • https://ibipti.com/synthesia-high-quality-crack-10-6-build-5311-activation-key-2020/In PDF document text
  • https://cambodiaonlinemarket.com/wp-content/uploads/2022/11/Libro_Microcontrolador_Pic16f84_Desarrollo_De_Proyectos_Pdf_.pdfIn PDF document text
  • https://mammothminerockshop.com/swords-sandals-2-full-version-hacked-download-free-_top_/In PDF document text
  • http://www.b3llaphotographyblog.com/nemetschek-scia-engineer-v-free-crack-29/In PDF document text
  • http://www.chelancove.com/factorytalk-view-studio-510-download-repack/In PDF document text
  • https://joyfuljourneyresources.net/wp-In PDF document text
  • http://songskriti.com/wp-In PDF document text
  • https://cambodiaonlinemarket.com/wp-In PDF document text
  • http://signforcover.com/akadema/vgvszwnoyxjnzxigq292ywrpcyaxmybbdmvjienyywnrzwqvgv/collidenfl.impels.balamory.zg93bmxvywr8sugxyji0d2zid3hoalk1txpjme9urxlmshd5tlrrd2zid29uu2tnvji5evpiqnlawe56suz0wvrvefnvru1nvmpjz1vfukdyuq/riesling/taco/In PDF document text
  • http://www.tcpdf.orgIn PDF document text
  • http://www.comss.ru/page.php?id=442In PDF document text
  • http://www.comss.ru/page.php?id=3080In 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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