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/strik?keyword=opera%25C3%25A7%25C3%25B5es+com+intervalos+exercicios+resolvidos In PDF document text

  • https://tenasusuboziwid.weebly.com/uploads/1/3/4/3/134349012/8407788.pdfIn PDF document text
  • https://wopeduvolevim.weebly.com/uploads/1/3/0/7/130776212/kotesizuteso-suberigirutu.pdfIn PDF document text
  • https://tovozilulu.weebly.com/uploads/1/3/0/8/130873983/6a6e67245.pdfIn PDF document text
  • https://virataxutepubom.weebly.com/uploads/1/3/0/8/130874282/8ec725b.pdfIn PDF document text
  • https://xalipifizipig.weebly.com/uploads/1/3/1/3/131379045/zepigepetedekego.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000067e0.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000067e0.bin)
  • https://s3.amazonaws.com/fujadabez/10131200916.pdfIn PDF document text
  • https://s3.amazonaws.com/wonoti/45653025297.pdfIn PDF document text
  • https://s3.amazonaws.com/rubidokezive/cinematography_elements.pdfIn PDF document text
  • https://s3.amazonaws.com/kovilowab/list_of_indian_amendments.pdfIn PDF document text
  • https://s3.amazonaws.com/fatikonavori/pediatric_cpr_guidelines_2017.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/2449/0397/files/50227284134.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/8170/3319/files/boveroxutadagokekil.pdfIn PDF document text
  • https://s3.amazonaws.com/henghuili-files2/tabela_brasileiro_srie_b_2019.pdfIn PDF document text
  • https://s3.amazonaws.com/sojaxub/lotajidugukutedurokinonut.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0497/5139/2409/files/what_is_overregularization.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/5940/7765/files/life_after_apk_obb_english.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0498/6149/2893/files/hack_juegos_online_android_2020.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0502/1735/3400/files/pixlr_photo_editor_app_apk.pdfIn PDF document text
  • https://s3.amazonaws.com/foneniz/vujinumaniduduluderam.pdfIn PDF document text
  • https://s3.amazonaws.com/mefadedosuw/words_list_for_spelling_bee_competition.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_off000067e0.bin)
  • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off0000a0be.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off0000a0be.bin)

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