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/aws?keyword=anualidades+ejercicios+resueltos+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4380214/normal_5f91999cb8589.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4369495/normal_5f8b186aea98e.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4383800/normal_5f8dbf893ff23.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00005965.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00005965.bin)
  • https://cdn.shopify.com/s/files/1/0504/4437/0070/files/limiting_reagent_and_percent_yield_worksheet_answers.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/1825/5510/files/oreo_cupcake_recipe_preppy_kitchen.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0437/9151/5797/files/merge_dragons_chests_in_levels.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0505/0731/7410/files/69764194677.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0268/8447/3007/files/cisco_todd_lammle_ccna.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/1880/5657/files/kivedapalixunesigo.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0266/7846/0590/files/bissell_powerforce_helix_filter_removal.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0500/5328/4008/files/renal_function_test_download.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0268/7628/1021/files/67650412582.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/3723/7146/files/79036642048.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0501/5060/4988/files/difowinixome.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/1484/8671/files/super_saiyan_1-1000.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0436/2688/9374/files/bumuwulolatilogazo.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0266/8783/2260/files/mysql_vb.net_tutorial.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/3679/7859/files/11_chief_pros_and_cons_of_internet_censorship.pdfIn PDF document text
  • https://s3.amazonaws.com/susopuzupure/83934412573.pdfIn PDF document text
  • https://s3.amazonaws.com/toguvaju/ammonium_sulphate_fertilizer.pdfIn PDF document text
  • https://s3.amazonaws.com/serogajugomiji/caballo_de_troya_libro_descargar.pdfIn PDF document text
  • https://s3.amazonaws.com/fodose/cell_culture_based_vaccines.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0501/9939/6531/files/tadupumupawelu.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/9313/0390/files/brita_maxtra_filter_cartridge_instructions.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0493/1734/7494/files/55648982669.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0501/0351/7338/files/theme_store_oppo_f_5_apk.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/2091/7668/files/65809025456.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_off00005965.bin)

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