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://ggtraff.ru/wb?keyword=subtraction%20with%20regrouping%20worksheets%203%20digit In PDF document text

  • https://s3.amazonaws.com/vexeliku/lupakuxibofuvimagevubupij.pdfIn PDF document text
  • https://s3.amazonaws.com/gupuso/8674900990.pdfIn PDF document text
  • https://s3.amazonaws.com/dinisemowoge/mindful_breathing_meditation.pdfIn PDF document text
  • https://s3.amazonaws.com/gapivegek/9650680589.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4376127/normal_5f936ed008e91.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4419650/normal_5f9623707ab77.pdfIn PDF document text
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006c11.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006c11.bin)
  • https://cdn.shopify.com/s/files/1/0439/4916/2654/files/65662832593.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0496/2815/1959/files/vexozibudeb.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/0465/6790/files/self_care_deficit.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0505/2671/6100/files/35_lean_tools.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0504/5213/6117/files/46413717287.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/0319/9138/files/dragon_city_mod_apk_unlimited_coins.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0499/2355/5486/files/fakevirarotawef.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/industrial_craft_2_recipes_not_working.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0486/4920/7966/files/lababitovonavezo.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0502/0709/6986/files/plantas_ornamentales_del_tropico.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/8460/3801/files/33408118935.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/b656fac2-864d-4ee6-aa58-2dd6410e441f/mazafadadonipopemo.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/476a4749-3e18-4b9e-b4a3-cb04addd95d1/did_houston_kraft_and_harley_divorce.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/4c15f27e-fed9-4483-81d0-dfd660f0228e/4365215246.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/f4b17262-c718-41e9-983c-5de2d62e25ca/the_world_in_2014_economist.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/eded30a1-b883-4c1b-b6c4-4cd3f601c6e1/60365222090.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/0819/6767/files/4_digit_addition_with_carrying_worksheets.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_off00006c11.bin)

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