Malicious PDF — malware analysis report

Heuristics 9

• 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.
• 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://thedirsite.com/offsite/deepburner/?fletcher=larvicides.sportage&ZG93bmxvYWR8NGcyT0c1cWZId3hOalU0TWpFNE16UTBmSHd5TlRrd2ZId29UU2tnVjI5eVpIQnlaWE56SUZ0WVRVeFNVRU1nVmpJZ1VFUkdYUQ=QXV0b0NBRAQXV PDF link annotation

  • http://www.teploobmenka.ru/advert/teploobmennik-titanovyj/In PDF document text
  • https://ayoolahraga.id/lifestyle/autocad-free-download-3264bit-updated-2022/In PDF document text
  • https://aapanobadi.com/2022/07/23/autocad-with-product-key/In PDF document text
  • https://hotflushclub.com/wp-content/uploads/2022/07/AutoCAD-2.pdfIn PDF document text
  • https://educationnews.co.ke/advert/autocad-24-1-activator-download-x64-updated-2022/In PDF document text
  • https://weilerbrand.de/wp-content/uploads/2022/07/AutoCAD-1.pdfIn PDF document text
  • https://sameboigbeandco.com/2022/07/23/autocad-24-1-crack-download-pc-windows-2022-2/In PDF document text
  • https://kramart.com/autocad-crack-serial-key-3264bit/In PDF document text
  • http://nuihoney.com/autocad-final-2022/In PDF document text
  • https://lear.orangeslash.com/advert/autocad-2017-21-0-keygen-pc-windows/In PDF document text
  • http://www.bankerogkontanter.no/wp-content/uploads/2022/07/AutoCAD_Crack_Free_For_PC_Latest2022.pdfIn PDF document text
  • http://imeanclub.com/?p=89548In PDF document text
  • https://juncty.com/wp-content/uploads/2022/07/kielmars.pdfIn PDF document text
  • http://www.aceportocolom.org/wp-content/uploads/2022/07/AutoCAD.pdfIn PDF document text
  • https://www.icmgpartners.com/wp-content/uploads/2022/07/AutoCAD-2.pdfIn PDF document text
  • https://cilre.com/wp-content/uploads/2022/07/AutoCAD-1.pdfIn PDF document text
  • http://feelingshy.com/wp-content/uploads/2022/07/AutoCAD_Crack___Free_2022.pdfIn PDF document text
  • https://phxicc.org/wp-content/uploads/2022/07/AutoCAD-1.pdfIn PDF document text
  • https://storage.googleapis.com/imagens_videos_gou_cooking_prod/production/mesas/2022/07/42051fc1-autocad_crack_3264bit.pdfIn PDF document text
  • http://climabuild.com/wp-content/uploads/2022/07/AutoCAD.pdfIn PDF document text
  • https://storage.googleapis.com/imagens_videos_gou_cooking_prod/production/mesas/2022/07/42051fc1-autocad_crIn PDF document text
  • http://thedirsite.com/offsite/deepburner/?fletcher=larvicides.sportage&zg93bmxvywr8ngcyt0c1cwzid3hoalu0twpfne16utbmshd5tlrrd2zid29uu2tnvji5evpiqnlawe56suz0wvrvefnvru1nvmpjz1vfukdyuq=qxv0b0nbraqxvIn PDF document text
  • http://feelingshy.com/wp-content/uploads/2022/07/autocad_crack___free_2022.pdfIn 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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