Malicious PDF — malware analysis report

Heuristics 7

• PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
  PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
• 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.
• Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
  PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
• PDF carries website-builder CDN document link farm medium PDF_CDN_PDF_LINK_FARM
  PDF contains many clickable PDF links parked on website-builder CDNs or simple download gateways together with visible ebook, manual, or download lure text. This matches generated SEO document carriers used to route users through untrusted link/download chains; the PDF itself is an inert link carrier.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
  The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
• 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 https://gettraff.ru/wb?keyword=organic%20chemistry%20notes%20for%20neet%20pdf In PDF document text

  • https://s3.amazonaws.com/memul/51930078457.pdfIn PDF document text
  • https://s3.amazonaws.com/zetare/space_bound_lyrics.pdfIn PDF document text
  • https://rolosakuzorega.weebly.com/uploads/1/3/1/3/131379035/a5e0338.pdfIn PDF document text
  • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/64701f6dbd.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366339/normal_5f87160a56013.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4385612/normal_5f8fb09dafe51.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368266/normal_5f8e6d6da63e3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4414677/normal_5f951a3d2f980.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369923/normal_5f894592dee4f.pdfIn PDF document text
  • https://s3.amazonaws.com/livivuvuwugeb/chalcone_derivatives.pdfIn PDF document text
  • https://s3.amazonaws.com/jozetej/application_letter_sample_for_teachers.pdfIn PDF document text
  • https://s3.amazonaws.com/degagaziv/arduino_a_quick-_start_guide_2nd_edition.pdfIn PDF document text
  • https://s3.amazonaws.com/henghuili-files/dazabaferewe.pdfIn PDF document text
  • https://gonerogad.weebly.com/uploads/1/3/1/4/131438616/rudox-wetimi-tujelifazodugi-pefusazinunil.pdfIn PDF document text
  • https://sozivutapadonen.weebly.com/uploads/1/3/1/1/131164462/2038155.pdfIn PDF document text
  • https://fupefasupemeze.weebly.com/uploads/1/3/4/3/134315788/1389194.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4394073/normal_5f91d6b778e83.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379362/normal_5f8b3c0340334.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366365/normal_5f8751378827d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4375194/normal_5f8c610989714.pdfIn PDF document text
  • https://s3.amazonaws.com/wizidimawag/80505655405.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000061b4.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000061b4.bin)
  • 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/pdf/1.3/In PDF document text
  • http://ns.adobe.com/xap/1.0/In PDF document text
  • http://ns.adobe.com/xap/1.0/mm/In PDF document text
  • http://ns.adobe.com/xap/1.0/rights/In PDF document text
  • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off000061b4.bin)

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