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.
• 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.
• Malformed active-content stream length medium PDF_MALFORMED_EXPLOIT_STREAM_LENGTH
  A PDF stream that carries active/exploit-looking content has a declared /Length that does not match the recovered stream body. Malformed stream boundaries and length mismatches are common parser-evasion/supporting evidence around Reader exploit streams.
• 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/aws?keyword=capitalism+in+sociology+pdf In PDF document text

  • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/912954.pdfIn PDF document text
  • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/fa356bc45d.pdfIn PDF document text
  • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/0ce105de.pdfIn PDF document text
  • https://pojutawetuje.weebly.com/uploads/1/3/1/3/131382470/vufinisujilirosuzidu.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366337/normal_5f889dafeaaf7.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000715c.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000715c.bin)
  • https://uploads.strikinglycdn.com/files/3823dde1-65d0-40b3-93d8-3b7eb37e4cf9/17718578615.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/2d88a94f-082a-4ffc-8ed6-8579aef618b1/56913160535.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/9d1efa87-f08c-41b7-a957-5f497f2824b5/romogedikenogazelitik.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/627dce11-5bda-422a-b0c3-61d52136c264/13154933025.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f6c80e43-b9cc-4839-85cd-45410f38c250/silikusazosu.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/67c73748-b4e0-4091-8156-0b8e2926f434/mortgage_one_solutions_inc.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/bf56ab4a-a82d-4be8-babb-ebd57eae387c/kibewukekowaweravon.pdfIn PDF document text
  • https://s3.amazonaws.com/bupaxomu/bacterial_growth_rate.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/46da9dc1-eb3f-4855-9319-bf026d812c19/69343661586.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/15be03b0-1b1b-4c78-b370-5730648cb44f/categorization_worksheets_for_preschool.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/1b7ccb81-26d2-4f98-9796-4d0b0e7e3f73/xulodubusavakaseder.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_00_sfnt_off0000715c.bin)

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