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.
• Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
  A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
• 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/strik?keyword=business+math+test+and+answer+key In PDF document text

  • https://cdn-cms.f-static.net/uploads/4367643/normal_5f915325dc769.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4365598/normal_5f871c86e660a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366949/normal_5f8a6afe907bf.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4379987/normal_5f8f8353a51a6.pdfIn PDF document text
  • https://nofakefol.weebly.com/uploads/1/3/4/3/134341926/belibewugizedizakusa.pdfIn PDF document text
  • https://zavomafig.weebly.com/uploads/1/3/4/3/134356936/2067618.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4378845/normal_5f90f47cc38d2.pdfIn PDF document text
  • https://tenikekiso.weebly.com/uploads/1/3/0/7/130775729/8512971.pdfIn PDF document text
  • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/tunitulo.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4393631/normal_5f962e036d356.pdfIn PDF document text
  • https://dixozetazexode.weebly.com/uploads/1/3/4/4/134472526/97aeb2c7132.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005eea.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005eea.bin)
  • https://s3.amazonaws.com/henghuili-files2/27571741255.pdfIn PDF document text
  • https://s3.amazonaws.com/sisaxu/33496283445.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e2f22488-dd16-4907-a372-baa1c0396fc4/51030671713.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5faa80fb-06cb-4b8d-b28c-d77b7bc25a42/the_isle_fastest_dino.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/c26da017-2285-4d06-a22a-a78575283122/72424484417.pdfIn PDF document text
  • https://s3.amazonaws.com/jotizifime/opposite_words_list_download.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2822fd3b-ee8b-4c4f-ba6d-249dd83e31e6/astron_power_supply_service_manual.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/fb8fe383-39f1-4b91-89fc-f70bf8f12ebe/59646195207.pdfIn PDF document text
  • https://s3.amazonaws.com/baposivarabuj/canalisation_electrique_cours.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://dejavu.sourceforge.netIn extracted file (stream_005_off0000a31a.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (stream_005_off0000a31a.bin)
  • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off00005eea.bin)

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