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.
• 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.
• 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/wb?keyword=math%20practice%20grade%204%20pdf In PDF document text

  • https://dimaxafazeza.weebly.com/uploads/1/3/1/4/131453031/porukofosu.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4418558/normal_5f95d59376f3b.pdfIn PDF document text
  • https://xonuveviriniw.weebly.com/uploads/1/3/0/7/130738603/143770975051109.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4402948/normal_5f93fe2c60af3.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4370263/normal_5f8d601a237d2.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/tadovu/tenant_agreement_form.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0441/3816/8472/files/25402846737.pdfIn PDF document text
  • https://s3.amazonaws.com/fokapikow/2020_military_pay_charts_dfas.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0486/6555/9190/files/29447031795.pdfIn PDF document text
  • https://s3.amazonaws.com/pewebopufupe/annual_report_2019.pdfIn PDF document text
  • https://s3.amazonaws.com/gupuso/17149335075.pdfIn PDF document text
  • https://s3.amazonaws.com/susopuzupure/vaxasalenimivozena.pdfIn PDF document text
  • https://s3.amazonaws.com/henghuili-files2/brute_force_password_online.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0439/3009/1688/files/foothill_college_summer_2019_high_school.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0505/9461/1365/files/84679230741.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/1279/2225/files/how_to_beat_riddle_school_4_walkthrough.pdfIn PDF document text
  • https://s3.amazonaws.com/zarelusipofox/nifidiposadakizowu.pdfIn PDF document text
  • https://s3.amazonaws.com/liwafo/gate_agricultural_engineering_study_material.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0499/1287/3128/files/tenias_que_ser_tu_zara_black.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0500/1120/9888/files/va_cash_out_refinance_guidelines_september_2020.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0428/9737/5388/files/salamat_full_song_wapking.pdfIn PDF document text
  • https://s3.amazonaws.com/jadere/way_maker_piano_sheet_music.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 PDF document text

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