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.
• 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.
• 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.
• 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/123?keyword=ccs+university+date+sheet+2020+pdf+download In PDF document text

  • https://cdn-cms.f-static.net/uploads/4366317/normal_5f879b32b6c86.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365598/normal_5f870f2192180.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366035/normal_5f87044ce906c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367297/normal_5f877f95b98bb.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365628/normal_5f875495e63ac.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367311/normal_5f877f0de26fd.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367294/normal_5f8787fd48c53.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366308/normal_5f87c51f36b20.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365552/normal_5f873f33ccc51.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368996/normal_5f87a52bc49cf.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367621/normal_5f8750bb15857.pdfIn PDF document text
  • https://site-1038601.mozfiles.com/files/1038601/61780151342.pdfIn PDF document text
  • https://site-1048452.mozfiles.com/files/1048452/53559786802.pdfIn PDF document text
  • https://site-1039280.mozfiles.com/files/1039280/sewukibo.pdfIn PDF document text
  • https://site-1039658.mozfiles.com/files/1039658/94312314321.pdfIn PDF document text
  • https://site-1038429.mozfiles.com/files/1038429/94326733629.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366661/normal_5f879cc25c074.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366351/normal_5f871076512bb.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366044/normal_5f87176cb4fbd.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365626/normal_5f8713afbccd9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367287/normal_5f87b9c78410b.pdfIn PDF document text
  • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/vefena-joxegevow-saxosedopaxeta-farorewufama.pdfIn PDF document text
  • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/wilononuremorev_surawolumizi_pikenolugov_juwijisa.pdfIn PDF document text
  • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/roruj-fegedevovelere-zexomojikazi-rewubujelem.pdfIn PDF document text
  • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/lanadez.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00007b13.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00007b13.bin)
  • http://fedorahosted.org/lohitIn extracted file (font_05_sfnt_off0000e46c.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_off00007b13.bin)
  • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn extracted file (font_01_sfnt_off00008e6c.bin)
  • http://www.gnu.org/copyleft/gpl.htmRegularIn extracted file (font_01_sfnt_off00008e6c.bin)
  • http://dejavu.sourceforge.netIn extracted file (font_04_sfnt_off0000cd00.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_04_sfnt_off0000cd00.bin)

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