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.
• QR-code redirect lure medium SE_QR_LURE
  Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
• 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/pify?keyword=espiar+whatsapp+apk In PDF document text

  • https://cdn-cms.f-static.net/uploads/4369663/normal_5f9069dda3f2c.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4368996/normal_5f88133428dfb.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4410432/normal_5f989b9464431.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366668/normal_5f8bbef635980.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4383445/normal_5f9419d61e471.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4374009/normal_5f954e3aae851.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000081d8.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000081d8.bin)
  • https://s3.amazonaws.com/henghuili-files2/pdf_attachment_in_spanish.pdfIn PDF document text
  • https://s3.amazonaws.com/gajabedafot/artritis_cronica_degenerativa.pdfIn PDF document text
  • https://s3.amazonaws.com/tapexiw/ruseju.pdfIn PDF document text
  • https://s3.amazonaws.com/jamokaroxoj/origen_del_dia_del_amor_y_la_amistad.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/7881/8715/files/nova_3_gameloft_apk.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/6996/7013/files/saxafukujalinug.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/8649/5388/files/belt_of_giant_strength_cost_5e.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0488/4565/2133/files/phantasy_calradia_cleric_guide.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/7827/0628/files/under_armour_objectives_and_strategies.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0471/0678/5430/files/43262124001.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/4886/9786/files/taste_test_worksheet.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/3280/8088/files/sat_math_notes.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0503/8650/1806/files/conjunctions_worksheets_for_class_5.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_off000081d8.bin)

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