Malicious PDF / .VIR — malware analysis report

Heuristics 6

• 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 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 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.
• 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://evacdir.com/VG9tIEFuZCBKZXJyeSBDb21wbGV0ZSBDb2xsZWN0aW9uIEFsbCAxNjEgRXBpc29kZXMVG9/alkaased/applicator.unique?ZG93bmxvYWR8YlEzYm5OMWZId3hOalUwTnpnd09UUXlmSHd5TlRrd2ZId29UU2tnVjI5eVpIQnlaWE56SUZ0WVRVeFNVRU1nVmpJZ1VFUkdYUQ=layed/plesetsk&rijstpudding=basgetti PDF link annotation

  • https://guaraparadise.com/2022/06/10/gt-racing-king-steering-wheel-driver-top/In PDF document text
  • http://torbayexperts.com/wp-content/uploads/2022/06/downloadSketchBookPro2018portable32bit.pdfIn PDF document text
  • https://baybenmx.com/2022/06/10/zindagi-na-milegi-dobara-download-movie-1080p-torrent-link/In PDF document text
  • https://www.darussalamchat.com/upload/files/2022/06/E9QqovtwCCbkZ2TBIHfE_10_06f02c2ce2c2294010d37456f7ea154b_file.pdfIn PDF document text
  • https://www.illuzzzion.com/socialnet/upload/files/2022/06/ZGOxWq8tkVPPrdntNFDB_10_5dbd60fed0732f39748f3c94c3d2be9d_file.pdfIn PDF document text
  • https://futurestrongacademy.com/wp-content/uploads/2022/06/ADTs_Data_Structures_and_Problem_Solving_with_C_free_20.pdfIn PDF document text
  • http://coolbreezebeverages.com/?p=12414In PDF document text
  • https://plumive.com/upload/files/2022/06/4UuTgnCzuqoBbxjcyQds_10_5dbd60fed0732f39748f3c94c3d2be9d_file.pdfIn PDF document text
  • https://www.puremeditation.org/2022/06/10/literaturabrasileirawilliamcerejaetherezacocharpdf13/In PDF document text
  • http://pixology.in/wp-content/uploads/2022/06/ursdarr.pdfIn PDF document text
  • https://www.darussalamchat.com/upload/files/2022/06/E9QqovtwCCbkZ2TBIHfE_10_06f02c2ce2c2294010d37456f7eaIn PDF document text
  • https://www.illuzzzion.com/socialnet/upload/files/2022/06/ZGOxWq8tkVPPrdntNFDB_10_5dbd60fed0732f39748f3c94In PDF document text
  • https://futurestrongacademy.com/wp-In PDF document text
  • http://evacdir.com/vg9tiefuzcbkzxjyesbdb21wbgv0zsbdb2xszwn0aw9uiefsbcaxnjegrxbpc29kzxmvg9/alkaased/applicator.unique?zg93bmxvywr8ylezym5omwzid3hoaluwtnpnd09uuxlmshd5tlrrd2zid29uu2tnvji5evpiqnlawe56suz0wvrvefnvru1nvmpjz1vfukdyuq=layed/plesetsk&rijstpudding=basgettiIn 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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