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.
• LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
  Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
• 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://ttraff.com/pify?keyword=antutu+apk+6.+2.+7 In PDF document text

  • http://files.besodium.org/uploads/1/3/1/4/131452922/4028fa5920147e5.pdfIn PDF document text
  • http://bodomeli.elenbnews.com/uploads/1/3/1/6/131636725/8889145.pdfIn PDF document text
  • http://kesemide.blackhawkrailwayhistoricalsociety.org/uploads/1/3/1/8/131856998/xogasov.pdfIn PDF document text
  • http://files.complianceandriskcompany.com/uploads/1/3/2/7/132740778/8453346.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/1/0432/6224/7067/files/30118597022.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/7099703753.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/5159/7480/files/jovukuwarulikojodedud.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/9699/8048/files/motavegemezidumedofub.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/7537/1162/files/common_themes_in_literature.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/5374/3270/files/poptropica_24_carrot.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/0067/6001/files/curl_json_post_example.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/3397/7247/files/16435580792.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/xanonetenu.pdfIn macro / runtime command snippet
  • https://cdn.shopify.com/s/files/1/0431/1826/4469/files/ereading_worksheets_text_structure_quiz.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/8774/9525/files/black_sheep_movie_in_tamilrockers.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
  • https://cdn.shopify.com/s/files/1In macro / runtime command snippet
  • http://scripts.sil.org/OFLIn PDF document text

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