Malicious PDF — malware analysis report

Heuristics 5

• 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.
• External URI info PDF_URI
  PDF contains an external URL action
• 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://trafftec.ru/aws?keyword=definition+of+scumbling PDF link annotation

  • https://cdn-cms.f-static.net/uploads/4393485/normal_5f964de9327ee.pdfIn PDF document text
  • https://tarazedi.weebly.com/uploads/1/3/4/6/134687061/2346566.pdfIn PDF document text
  • https://xopigitit.weebly.com/uploads/1/3/4/3/134339451/8329298.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_01_sfnt_off00007616.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_01_sfnt_off00007616.bin)
  • http://fedorahosted.org/lohitIn extracted file (font_02_sfnt_off00008738.bin)
  • http://www.opentle.orgIn extracted file (font_04_sfnt_off00009bb8.bin)
  • https://s3.amazonaws.com/wilugugo/cadena_de_valor_extendida.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/90259bac-8183-4b0a-bd1a-fc3197d6a4a7/volos_guide_to_waterdeep.pdfIn PDF document text
  • https://s3.amazonaws.com/jenisozazewubo/dnd_3.5_book_of_exalted_deeds.pdfIn PDF document text
  • https://s3.amazonaws.com/nufidibodudulad/80666698245.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/6ac5c390-fd94-414e-82d5-af2a119562f4/22278875901.pdfIn PDF document text
  • https://s3.amazonaws.com/kexamoxusinixu/fomavazigoxovatarevuvake.pdfIn PDF document text
  • https://s3.amazonaws.com/zuxadol/71796870631.pdfIn PDF document text
  • https://s3.amazonaws.com/sugaguxagu/lutuf.pdfIn PDF document text
  • https://s3.amazonaws.com/mojivikapeti/pifolojunilamegexokisowu.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 extracted file (font_01_sfnt_off00007616.bin)
  • http://www.gnu.org/licenses/gpl.htmlIn extracted file (font_04_sfnt_off00009bb8.bin)
  • http://dejavu.sourceforge.netIn extracted file (font_06_sfnt_off0000d73f.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_06_sfnt_off0000d73f.bin)

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