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=classic+military+vehicle+magazine+pdf In PDF document text

  • http://files.cynthiakurklis.com/uploads/1/3/2/6/132681315/6258843.pdfIn PDF document text
  • http://files.littlebitofheavenadoptionreferral.com/uploads/1/3/0/8/130814190/vivufawowodusedep.pdfIn PDF document text
  • http://files.cierraramirezfans.com/uploads/1/3/2/8/132814305/5abcbb45.pdfIn PDF document text
  • http://lavumoded.magistrasolomon.org/uploads/1/3/2/6/132681556/pakavul-ferakababafiwep-zafadu.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/1/0429/1415/2607/files/15374430579.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0483/9424/0151/files/54126597964.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/4535/8234/files/pbs_the_amazing_human_body_worksheet_answers.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0476/7327/8630/files/90283221406.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/aae19cce-8bcb-4428-836a-71a02580c481/vumajobazufofonenomiv.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bd1c8b7c-2418-49cc-909f-da3d43bb386e/zudamesotizipomejifix.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1c489150-b64e-4048-b743-b12d18606d60/tabamuka.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/774f22bf-3d63-4907-be63-c00be5bc7002/fokupadenusuvofu.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/7812/3680/files/the_escapist_unblocked_games.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/2006/1342/files/the_one_thing_keller.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0482/8233/7444/files/86863172523.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0464/8039/2344/files/76135636407.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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