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://cctraff.ru/aws?keyword=basic+probability+questions+with+solutions+pdf In PDF document text

  • https://cdn-cms.f-static.net/uploads/4371498/normal_5f91a409a9a0a.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4366620/normal_5f96459e8fdd0.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4392444/normal_5f91d3e50bc09.pdfIn PDF document text
  • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/gumominudumuwanizuma.pdfIn PDF document text
  • https://mojivimimujovo.weebly.com/uploads/1/3/0/8/130874437/xefafimofaxeparekuji.pdfIn PDF document text
  • https://kawigijutugin.weebly.com/uploads/1/3/4/3/134351661/4772613.pdfIn PDF document text
  • https://samomalekadoj.weebly.com/uploads/1/3/1/4/131438786/2483749.pdfIn PDF document text
  • http://www.opentle.orgIn extracted file (stream_005_off00008535.bin)
  • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000071aa.bin)
  • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000071aa.bin)
  • https://cdn.shopify.com/s/files/1/0498/7686/1086/files/transformers_devastation_trophy_guide.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/7368/3100/files/the_myth_of_sisyphus_and_other_essays_vintage.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0496/6334/4789/files/valikarujisasuf.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0484/3841/1422/files/lyotard_det_sublime.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/0923/6374/files/17816738034.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/5f37afbf-39f1-4d0c-9ba6-2c304faa8815/wosasexuzebererulexitax.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/d91a36a4-f2f6-4f55-afc1-309ab8e03c33/20924718417.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/0c839a0c-fc76-4d7d-8393-2847246ce9c5/historia_del_sistema_hexadecimal.pdfIn PDF document text
  • https://uploads.strikinglycdn.com/files/86d2fb86-3d32-45e4-8684-1843309eba27/99576170240.pdfIn PDF document text
  • https://s3.amazonaws.com/xazarujokemus/can_i_trust_the_bible_rc_sproul.pdfIn PDF document text
  • https://s3.amazonaws.com/felasorarabipis/adverbs_modifying_adjectives_worksheet.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0268/8391/5962/files/78669372675.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0502/7971/0905/files/polymorphism_in_cnidarians.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/9886/4800/files/mimalifefabuzam.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0495/5045/9047/files/7719264954.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://www.gnu.org/licenses/gpl.htmlIn extracted file (stream_005_off00008535.bin)
  • http://scripts.sil.org/OFLIn extracted file (font_00_sfnt_off000071aa.bin)
  • http://dejavu.sourceforge.netIn extracted file (font_03_sfnt_off0000d7fe.bin)
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_03_sfnt_off0000d7fe.bin)

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