Malicious PDF — malware analysis report

Heuristics 6

• 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.
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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://ggtraff.ru/strik?keyword=biologia+curtis+barnes+7+edicion+pdf In PDF document text

  • https://site-1039720.mozfiles.com/files/1039720/52629668347.pdfIn PDF document text
  • https://site-1037059.mozfiles.com/files/1037059/leromorigurupitasemirugi.pdfIn PDF document text
  • https://site-1040215.mozfiles.com/files/1040215/74993642639.pdfIn PDF document text
  • https://site-1039674.mozfiles.com/files/1039674/82840659134.pdfIn PDF document text
  • https://site-1042014.mozfiles.com/files/1042014/jagavuganufob.pdfIn PDF document text
  • http://files.andiebottrell.com/uploads/1/3/0/7/130775851/dovak.pdfIn PDF document text
  • http://files.coffsharbourmusicalcomedycompany.com/uploads/1/3/1/3/131379420/8c57b780.pdfIn PDF document text
  • http://files.tonymeers.com/uploads/1/3/0/7/130775968/ruzafafo-dipodaj-xoxazabuviri.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0477/3471/8620/files/91017097700.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0437/8640/4000/files/letters_from_santa_shark_tank.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0481/4490/8455/files/peace_talks_dresden_files_release_date.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/1504/4254/files/how_to_make_a_custom_rom_for_android.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/greenworks_pressure_washer_1600_instructions.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0481/1433/5897/files/merevinosuzoju.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/3108/4701/files/sumosape.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0437/5596/2522/files/mordecai_skill_tree.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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