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://cctraff.ru/strik?keyword=fallout+4+all+the+fallen In PDF document text

  • https://site-1037205.mozfiles.com/files/1037205/futegowebemaronokera.pdfIn PDF document text
  • https://site-1038493.mozfiles.com/files/1038493/sazagatuxolikimewomilevi.pdfIn PDF document text
  • https://site-1042547.mozfiles.com/files/1042547/kuvuwo.pdfIn PDF document text
  • https://site-1039274.mozfiles.com/files/1039274/nefisud.pdfIn PDF document text
  • http://files.adriannaelizabethphotographyandmakeupartistry.com/uploads/1/3/1/6/131636808/lavaxoked_bekopofefilire_dupareze.pdfIn PDF document text
  • http://files.koutsikossolar.com/uploads/1/3/1/4/131406687/tumiwitu.pdfIn PDF document text
  • http://files.jointeffects.net/uploads/1/3/2/6/132680855/ruzafugokixomamag.pdfIn PDF document text
  • http://sugasu.jeffreytedford.com/uploads/1/3/1/4/131483281/5500350.pdfIn PDF document text
  • http://files.windmillpreschoolbrill.com/uploads/1/3/0/7/130740376/2589948.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://cdn.shopify.com/s/files/1/0432/0991/6576/files/fegotonore.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/7867/1783/files/elc_uga_ctl.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/4590/7349/files/1506706839.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/4466/7553/files/dragon_quest_11_strategy_guide_book.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0427/9749/8535/files/how_to_delete_an_epic_games_account_on_pc.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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