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.
• 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.
• Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
  Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
• Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
  PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
• 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.
• 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/UGFzc3dvcmQgRW5jcnlwdGVkIEZpbGUgRXVybyBUcnVjayBTaW11bGF0b3IgMgUGF/.ZG93bmxvYWR8a3A3WkhaeWJYeDhNVFkxTlRNek9Ua3dOSHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA.chairworks.insulte?kahoano=forgings PDF link annotation

  • https://sindisfac.com.br/advert/rock-solid-ezx-keygen-download-upd/In PDF document text
  • https://www.52zhongchou.com/wp-content/uploads/2022/06/Zara_Studio_2_2_Full_Descargar.pdfIn PDF document text
  • http://sehatmudaalami65.com/?p=20389In PDF document text
  • https://www.akademicloud.com/blog/index.php?entryid=1018In PDF document text
  • http://powervapes.net/iobit-advanced-systemcare-12-pro-v12-0-3-192-crack-64-bit-verified/In PDF document text
  • http://balloonfellows.com/wp-content/uploads/2022/06/HD_Online_Player_Vishwaroopam_Movie_Torrent_Download_.pdfIn PDF document text
  • https://www.directdelen.nl/blog/index.php?entryid=8750In PDF document text
  • http://www.pickrecruit.com/the-asambhav-movie-free-download-new/In PDF document text
  • https://anipool.es/wp-content/uploads/2022/06/hearraf.pdfIn PDF document text
  • https://maniatech-academy.co.uk/blog/index.php?entryid=5In PDF document text
  • https://storage.googleapis.com/imagens_videos_gou_cooking_prod/production/mesas/2022/06/2e12c84e-teori_komunikasi_massa_mcquail_ebook_extra_quality_download.pdfIn PDF document text
  • https://moodle.ezorock.org/blog/index.php?entryid=3371In PDF document text
  • https://workplace.vidcloud.io/social/upload/files/2022/06/S1TwlyP2BjmdCji6eAmO_16_0d6d4684feff4ccc3c3ea2784e9ff906_file.pdfIn PDF document text
  • https://bizzbless.com/wp-content/uploads/2022/06/Flip_Q_Serial_REPACK_Keygen_Freeware.pdfIn PDF document text
  • https://www.dejavekita.com/upload/files/2022/06/xso8Z2TmTa9Nv59PAmBp_16_309e1fc29c88a597bc7f4bdab52c4756_file.pdfIn PDF document text
  • http://kwan-amulet.com/archives/1893555In PDF document text
  • http://18.138.249.74/upload/files/2022/06/oPoVY75CIZW42vIXwWRL_16_309e1fc29c88a597bc7f4bdab52c4756_file.pdfPDF link annotation
  • http://www.midwestmakerplace.com/?p=22561In PDF document text
  • http://thingsforfitness.com/?p=21845In PDF document text
  • https://thoitranghalo.com/wp-content/uploads/2022/06/grasad.pdfIn PDF document text
  • http://balloonfellows.com/wp-In PDF document text
  • https://storage.googleapis.com/imagens_videos_gou_cooking_prod/production/mesas/2022/06/2e12c84e-In PDF document text
  • https://workplace.vidcloud.io/social/upload/files/2022/06/S1TwlyP2BjmdCji6eAmO_16_0d6d4684feff4ccIn PDF document text
  • https://www.dejavekita.com/upload/files/2022/06/xso8Z2TmTa9Nv59PAmBp_16_309e1fc29c88a597bc7fIn PDF document text
  • http://18.138.249.74/upload/files/2022/06/oPoVY75CIZW42vIXwWRL_16_309e1fc29c88a597bc7f4bdabPDF link annotation
  • http://evacdir.com/ugfzc3dvcmqgrw5jcnlwdgvkiezpbgugrxvybybucnvjaybtaw11bgf0b3igmgugf/.zg93bmxvywr8a3a3wkhaewjyedhnvfkxtlrnek9ua3doshg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda.chairworks.insulte?kahoano=forgingsIn PDF document text
  • http://balloonfellows.com/wp-content/uploads/2022/06/hd_online_player_vishwaroopam_movie_torrent_download_.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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