Malicious PDF — malware analysis report

Heuristics 5

• 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.
• 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=engineering+physics+by+avadhanulu+and+kshirsagar+pdf In PDF document text

  • http://files.rickyfrank.com/uploads/1/3/0/8/130874252/nobobagafimabum-nekape.pdfIn PDF document text
  • http://satagug.ashleyscleaningservice.org/uploads/1/3/1/3/131379394/35ae3384.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/b527c149-027f-40cb-bb60-d673a5202dfd/xezaziwutojerupezita.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/505ebb56-c7d8-4e3a-be71-46240aea42ce/monakilajegejijap.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1eb28ca2-5405-46ac-af4d-ca41e4afea6e/pitoberax.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/cd3290c7-0a95-42ee-b9fc-4eaf7095cf33/93353194143.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/e1a56bc7-abf5-40f7-b720-102f9d0aed1b/kuretoxomodelifulunoj.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/1504/4263/files/sample_letter_banning_someone_from_premises_uk.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/34f58e5e-fbc7-4aa7-a1b9-c4e7e6573410/regagav.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5941e07e-ba1a-4817-a578-f1cdf0116bcc/zifunonebifo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/09567050-4275-44fd-892b-4536644a326c/gepolazub.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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