Malicious PDF — malware analysis report

Heuristics 7

• 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.
• PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
  PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
• 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.
• Urgency / deadline lure low SE_URGENCY_LURE
  Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
• 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/strik?keyword=ielts+answer+sheet+task+1+pdf In PDF document text

  • http://zunupovu.airbnbcleaningserviceanchorage.com/uploads/1/3/1/8/131872225/wogolatu-papubeduv-pazoperopi.pdfIn PDF document text
  • http://files.kavelarisantiques.com/uploads/1/3/1/4/131407918/vajebixugosuwu.pdfIn PDF document text
  • http://files.grantgarrisongolf.com/uploads/1/3/1/0/131070362/vunuzegifaz_pajoguxi_jolevutoxum_natilolojibox.pdfIn PDF document text
  • http://kimapaxup.bbt-livonia.com/uploads/1/3/2/3/132303354/18d0dca34.pdfIn PDF document text
  • http://zobas.tarahanish.com/uploads/1/3/0/7/130740206/0e63798e670.pdfIn PDF document text
  • https://site-1037883.mozfiles.com/files/1037883/vafavaleluwegititugexoj.pdfIn PDF document text
  • https://site-1037018.mozfiles.com/files/1037018/kosekapokunozakizowirov.pdfIn PDF document text
  • https://site-1037113.mozfiles.com/files/1037113/xifewedelezuwa.pdfIn PDF document text
  • https://site-1036680.mozfiles.com/files/1036680/kemevomikogamop.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/oot_debug_rom.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0462/3371/4848/files/jordan_normal_form_matrix.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/5863/3631/files/negima_episode_1_english_dubbed.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0428/7492/9308/files/sixixovazulilepumadelikit.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/9499/0231/files/duloz.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/4526/5312/files/mijonubogavaremun.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/6570/3590/files/pastest_mcq_dentistry.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/3689/3599/files/43238671282.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/2960/1175/files/sawajen.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 PDF document text

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