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://evacdir.com/SW5mb3dvb2QgMTk5MiBlbnRlcnByaXNlIGZyZWUgNjQSW5/ZG93bmxvYWR8TEU2TjJKcmZId3hOalUwTnpnd056ZzNmSHd5TlRrd2ZId29UU2tnVjI5eVpIQnlaWE56SUZ0WVRVeFNVRU1nVmpJZ1VFUkdYUQ.circumnavigate/symbol.reservations/unaccountable/stinger PDF link annotation

  • https://pzn.by/?p=16877In PDF document text
  • https://amnar.ro/wp-content/uploads/2022/06/The_T_Pain_Effect_Bundle_Crackrar_HOT.pdfIn PDF document text
  • https://www.hony.nl/actueel/come-attivare-windows-e-office-per-sempre-2019-kms-360/In PDF document text
  • https://www.sernecportal.org/portal/checklists/checklist.php?clid=80857In PDF document text
  • https://www.pedomanindonesia.com/advert/cyberlink-colordirector-ultra-8-0-2320-0-with-crack-best/In PDF document text
  • https://jomshopi.com/wp-content/uploads/2022/06/chalayd.pdfIn PDF document text
  • https://swamiherbalayurveda.com/wp-content/uploads/2022/06/Undertale_Free_Download_PC_Game.pdfIn PDF document text
  • https://hyepros.com/wp-content/uploads/2022/06/berwhen.pdfIn PDF document text
  • https://jgbrospaint.com/wp-content/uploads/2022/06/Doom_3_BFG_Edition_Fixer_205r.pdfIn PDF document text
  • https://richard-wagner-werkstatt.com/2022/06/09/simplo-novo/In PDF document text
  • https://www.mangasman.com/wp-content/uploads/2022/06/walllaur.pdfIn PDF document text
  • https://www.darussalamchat.com/upload/files/2022/06/4OLoqK2sJPlviDEHntxJ_09_8d0972e0ab23883b730cca3295df2ba9_file.pdfIn PDF document text
  • https://elsaltodeconsciencia.com/lumion-manual-pdf/In PDF document text
  • https://journeytwintotheunknown.com/2022/06/09/expression-encoder-4-screen-capture-crack/In PDF document text
  • https://www.sozpaed.work/wp-content/uploads/2022/06/SysTools_PST_Merge_5000_LINK_Crack_Latest.pdfIn PDF document text
  • http://exponor.mercurioantofagasta.cl/advert/command-and-conquer-generals-zero-hour-nocd-fix/In PDF document text
  • http://romeroconsult.com/wp-content/uploads/2022/06/Adobe_Photoshop_Lightroom_CC_6101_Patch_LINK.pdfIn PDF document text
  • https://haftbarg.com/wp-content/uploads/2022/06/derwat.pdfIn PDF document text
  • http://evacdir.com/sw5mb3dvb2qgmtk5miblbnrlcnbyaxnligzyzwugnjqsw5/zg93bmxvywr8teu2tjjkcmzid3hoaluwtnpnd056zznmshd5tlrrd2zid29uu2tnvji5evpiqnlawe56suz0wvrvefnvru1nvmpjz1vfukdyuq.circumnavigate/symbol.reservations/unaccountable/stingerIn PDF document text
  • https://wakelet.com/wake/ama1KrO-zq1wj37QmtNMZIn PDF document text
  • https://wakelet.com/wake/znEN3KNEmP_YOKBf-thpjIn 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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