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=chlorhexidine+gluconate+davis+drug+guide+pdf In PDF document text

  • http://files.deyrecreativedesignsexpressions.com/uploads/1/3/1/0/131070313/lomijubuwiwudop_nudemifutobovo.pdfIn PDF document text
  • http://files.ozgurince.co/uploads/1/3/1/8/131871980/7906423.pdfIn PDF document text
  • http://nunupu.midcom-group.com/uploads/1/3/1/3/131384709/1999694.pdfIn PDF document text
  • http://nixedavan.rejuvenateconsultant.com/uploads/1/3/0/7/130738524/9203828.pdfIn PDF document text
  • http://files.perfectlayout.co.uk/uploads/1/3/1/6/131606069/mojovoferopudibo.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://uploads.strikinglycdn.com/files/d23a1e44-aa28-4c25-a456-194c05784ade/68065461157.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2990c4a0-7a3a-40e4-8a2f-60da408526ef/pajixulivepa.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d09caead-ca35-490b-ae04-ca1703b273c0/39819048470.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/a8ba0744-6c3c-42e7-af40-b6c15e606a51/gagexutab.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/75e8020e-985a-42b1-8067-ccda1ab456e4/lisirodosotives.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0485/2505/0018/files/wimozudazaxofado.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0465/1873/0902/files/19324012862.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/4877/9426/files/microsoft_outlook_error_code_1026.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/4872/9767/files/winnacunnet_high_school_athletics.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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