Malicious PDF — malware analysis report

Heuristics 5

• 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.
• 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.
• 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://cctraff.ru/123?keyword=simplifying+radicals+worksheet+word+document In PDF document text

  • https://cdn-cms.f-static.net/uploads/4381297/normal_5f8e72cc8470b.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374984/normal_5f8d104bdcd9d.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366354/normal_5f92514d34af9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4384640/normal_5f9472d649cff.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370989/normal_5f91e81c547f2.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4387040/normal_5f90669cccdc2.pdfIn PDF document text
  • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/9691077.pdfIn PDF document text
  • https://fodezamu.weebly.com/uploads/1/3/1/4/131407453/wijigomofiweb_lotitosede_jukis_dirum.pdfIn PDF document text
  • https://riragojefo.weebly.com/uploads/1/3/1/8/131857115/87cec15aff5.pdfIn PDF document text
  • https://zijovegumasapal.weebly.com/uploads/1/3/4/3/134307166/fevibefutusewuluvaz.pdfIn PDF document text
  • https://guvapokasek.weebly.com/uploads/1/3/4/4/134437462/lemubotijirig.pdfIn PDF document text
  • https://wofexexugov.weebly.com/uploads/1/3/4/3/134318452/4805810.pdfIn PDF document text
  • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/galudi.pdfIn PDF document text
  • https://seririgikum.weebly.com/uploads/1/3/0/7/130739922/11604dc7532d10.pdfIn PDF document text
  • https://gaxopekel.weebly.com/uploads/1/3/0/9/130969853/durilozedesulogimi.pdfIn PDF document text
  • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/kewuxobukike-fivumowavenasiw-rulivutarakas-lufam.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006fea.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006fea.bin)
  • https://s3.amazonaws.com/mijedusovineti/61103771373.pdfIn PDF document text
  • https://s3.amazonaws.com/fasanag/bank_branch_manager_job_description.pdfIn PDF document text
  • https://s3.amazonaws.com/gelawiweza/44843172968.pdfIn PDF document text
  • https://s3.amazonaws.com/zetare/dactylic_hexameter.pdfIn PDF document text
  • https://s3.amazonaws.com/tizowodifi/rowexumawilakabiw.pdfIn PDF document text
  • https://s3.amazonaws.com/mubemutolewe/the_gazette_of_india_extraordinary.pdfIn 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/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_off00006fea.bin)

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