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/cleam/ZG93bmxvYWR8bkk0T1daM05IeDhNVFkxTkRnNU16RTVNWHg4TWpVNU1IeDhLRTBwSUZkdmNtUndjbVZ6Y3lCYldFMU1VbEJESUZZeUlGQkVSbDA/mine=eerily.cougar?herewith=TyBFZmVpdG8gSXNhaWFzIERvd25sb2FkIFBkZgTyB PDF link annotation

  • https://bodhirajabs.com/wp-content/uploads/2022/06/canlea.pdfIn PDF document text
  • http://www.buriramguru.com/wp-content/uploads/2022/06/daynaw.pdfIn PDF document text
  • http://www.gurujijunction.com/wp-content/uploads/2022/06/yedyhall.pdfIn PDF document text
  • https://ibipti.com/quickbeat-human-drummer-v1-free-download/In PDF document text
  • http://climabuild.com/wp-content/uploads/2022/06/HD_Online_Player_Citylights_full_movie_hd_1080p_blur.pdfIn PDF document text
  • https://kosa.ug/advert/hd-online-player-once-upon-time-in-mumbai-hindi-movie-torrent-download/In PDF document text
  • https://wildlifekart.com/wp-content/uploads/2022/06/ansys_121_64_bit_license_generator.pdfIn PDF document text
  • http://fritec-doettingen.ch/?p=7303In PDF document text
  • https://vega-eu.com/wp-content/uploads/2022/06/Panchathanthiram_Tamil_Movie_Subtitles_Download_Free.pdfIn PDF document text
  • http://aocuoieva.com/wp-content/uploads/2022/06/nedgraphics_texcelle_pro_cracked_raritan.pdfIn PDF document text
  • https://islamiceducation.org.au/realtek-rtl8187-wireless-lan-utility-windows-7-downloadl/In PDF document text
  • https://amazeme.pl/wp-content/uploads/2022/06/pankar.pdfIn PDF document text
  • https://lots-a-stuff.com/iclone-character-creator-essencial-bundle/In PDF document text
  • https://cotram.org/checklists/checklist.php?clid=34159In PDF document text
  • https://noshamewithself.com/upload/files/2022/06/Nyi323x8mSOEQ3ijD2Ba_11_96c7f176858d941652f8f9b16f4d76c8_file.pdfIn PDF document text
  • http://www.buzzthat.org/wowonder/upload/files/2022/06/HpTMSjQ6McvscLKz6hmR_11_7680ee6dd40965729408da47e0bce1a0_file.pdfIn PDF document text
  • http://chatroom.thabigscreen.com:82/upload/files/2022/06/9imBT6Ef8ou1dr9VFMpu_11_7680ee6dd40965729408da47e0bce1a0_file.pdfIn PDF document text
  • https://setewindowblinds.com/zuma-deluxe-1-0-crack-free-download/In PDF document text
  • http://fams-rus.com/wp-content/uploads/2022/06/film_impact_transition_pack_2_crack.pdfIn PDF document text
  • https://ourlittlelab.com/skysim-mcdonnell-douglas-dc9-fsxrar/In PDF document text
  • http://evacdir.com/cleam/zg93bmxvywr8bkk0t1dam05iedhnvfkxtkrnnu16rtvnwhg4twpvnu1iedhlrtbwsuzkdmntundjbvz6y3lcyldfmu1vbejesuzzeulgqkvsbda/mine=eerily.cougar?herewith=tybfzmvpdg8gsxnhawfziervd25sb2fkifbkzgtybIn 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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