Malicious PDF — malware analysis report

Heuristics 7

• 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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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://ttraff.com/wb?keyword=chemical%20kinetics%20cbse%20notes%20pdf In PDF document text

  • http://files.keeshondarchives.co.uk/uploads/1/3/1/1/131164312/metodarejejexopi.pdfIn PDF document text
  • http://files.shoulderandhandclinicisleofwight.com/uploads/1/3/0/7/130739308/dopesewewazorozuve.pdfIn PDF document text
  • http://files.futurewire.org/uploads/1/3/1/3/131381677/683781.pdfIn PDF document text
  • http://files.hpackids.org/uploads/1/3/1/3/131383456/xelawis-lofunuwuni.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/1/0432/1699/4466/files/fitudixegefukegojupogi.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/dictionary_of_electronics_and_communication_engineering.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/8094/0710/files/john_deere_2040_manual.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/5618/4992/files/51007761000.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/3354/2303/files/sojasofa.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/xojewanap.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0453/2862/9915/files/texto_argumentativo_estructura.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/9880/7202/files/microbiology_in_telugu.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0428/2207/4534/files/mechanics_of_materials_gere.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/jukemor.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/1568/3743/files/fe_to_rf.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
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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