Malicious PDF — malware analysis report

Heuristics 10

• 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.
• Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
  Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
• 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.
• 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://evacdir.com/ZG93bmxvYWR8Z2gzWVhsdGZId3hOalUwTnpnd09EYzVmSHd5TlRjMGZId29UU2tnY21WaFpDMWliRzluSUZ0R1lYTjBJRWRGVGww.efflorescence?kiyohara.templates.lacking&prabhedena=SEFDSyBGcmVlbWFrZSBWaWRlbyBDb252ZXJ0ZXIgR29sZCA0LjEuMTEuMzIgU2VyaWFsSEF PDF link annotation

  • https://elenabacchini.com/wp-content/uploads/2022/06/YayatiMarathiKadambariDownloadPDF.pdfIn PDF document text
  • https://coolstax.com/wp-content/uploads/2022/06/Canciones_manual_Ehterfan.pdfIn PDF document text
  • https://kaalama.org/upload/files/2022/06/FGCt4NxNqadNdTUFqxCB_10_c1bb43c58d5db491b99a00cc8a5509a9_file.pdfIn PDF document text
  • https://favs.favelas.top/upload/files/2022/06/2BhoIryHcV348qMqfUbd_10_cf2c3368b5f703b42af2911fed53b33d_file.pdfIn PDF document text
  • http://oneteamacademy.com/wp-content/uploads/2022/06/CRACK__CSI_SAP2000_V1424mediafirerar.pdfIn PDF document text
  • https://doyousue.com/wp-content/uploads/2022/06/fundy_designer_with_album_builder_v6_crack_windows_10_24.pdfIn PDF document text
  • http://www.readbutneverred.com/wp-content/uploads/2022/06/Crack_CarryMap_V_2_3.pdfIn PDF document text
  • https://supermoto.online/wp-content/uploads/2022/06/Sonu_Ke_Titu_Ki_Sweety_Movie_Free_Download_In_Hindi_HOT_Full_Hd.pdfIn PDF document text
  • http://humlog.social/upload/files/2022/06/SehIXuvOqHbqB6lx6ptw_10_cf2c3368b5f703b42af2911fed53b33d_file.pdfIn PDF document text
  • https://stacaravantekoop.nl/wp-content/uploads/2022/06/birdximo.pdfIn PDF document text
  • https://alaediin.com/wp-content/uploads/2022/06/Downloads_for__Samsung_Galaxy_Tab_P1000__AndroidFileHostcom.pdfIn PDF document text
  • https://deardigitals.com/wp-content/uploads/2022/06/glenar.pdfIn PDF document text
  • https://www.cbdxpress.eu/wp-content/uploads/Dishonored_The_Knife_of_Dunwall_PC_Game_Full_Version.pdfIn PDF document text
  • https://super-sketchy.com/leap-office-2000-download-new-free-crack-for-windows/In PDF document text
  • https://babblingbrookereadings.com/wp-content/uploads/2022/06/codigo_de_ativacao_net_spy_pro_gratis.pdfIn PDF document text
  • https://u-ssr.com/upload/files/2022/06/jbbHbXdjRbOWY75nofbV_10_cf2c3368b5f703b42af2911fed53b33d_file.pdfIn PDF document text
  • https://krasnograd.news/wp-content/uploads/2022/06/Shinko_Chcs2145_Printer_Drivers_NEW.pdfIn PDF document text
  • http://evacdir.com/zg93bmxvywr8z2gzwvhsdgzid3hoaluwtnpnd09eyzvmshd5tlrjmgzid29uu2tny21wafpdmwlirzlusuz0r1lytjbjrwrgvgww.efflorescence?kiyohara.templates.lacking&prabhedena=sefdsybgcmvlbwfrzsbwawrlbybdb252zxj0zxigr29szca0ljeumteumzigu2vyawfssefIn PDF document text
  • http://oneteamacademy.com/wp-content/uploads/2022/06/crack__csi_sap2000_v1424mediafirerar.pdfIn PDF document text
  • https://fayzlxoos.wixsite.com/filgillkenze/post/archicadIn PDF document text
  • https://wakelet.com/wake/_9MlJr98-RfKksaHOA5wTIn PDF document text
  • https://spacezozion.nyc3.digitaloceanspaces.com/upload/files/2022/06/jTdVRc2JPjTewIvzyCI3_10_cf2c3368b5f703b42af2911fed53b33d_file.pdfIn PDF document text
  • http://www.tcpdf.orgIn PDF document text
  • https://spacezozion.nyc3.digitaloceanspaces.com/upload/files/2022/06/jTdVRc2JPjTewIvzyCI3_10_cf2c3368b5f703b42af2911fed53b33d_filIn 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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