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.
• Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
  Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
• 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.ru/wix?keyword=instagram+psd+template+2018+free In PDF document text

  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://static.usrfiles.com/ugd/e5cbe5_e6a7070cec3e4f368b682dc79247b11a.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_6bec7bd20ef2441ba72da88219e6da27.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/49be48_7deb865d9b204f7a8d3ad44cbe58d311.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/735189_33554b18a9044b7b93475d1271f83485.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_15f594087dc04933bad9918a5812b228.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b65acf_aedaeff1478f4598819e3bf46b73b6c8.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/0cd3a8_cd54b574884a42a580bb43dbb9d5bad3.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_e59049d69c4b45eb975085bc52814b9f.pdfIn PDF document text
  • https://static.usrfiles.com/ugd/b8c837_604205606b5744b7bbbff45f4fcc0137.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0438/1533/8144/files/xurarinopojedoxidob.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/0673/8079/files/3355517871.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gujogu.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/6527/7605/files/2964203866.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/9145/1303/files/bhrashtachar_information_in_marathi.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/7066/0508/files/13229282052.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0436/9835/6392/files/rimujosedugufod.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/4868/1120/files/apes_free_response_2018_answers.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://savannah.gnu.org/projects/freefont/In PDF document text
  • http://www.gnu.org/licenses/In PDF document text
  • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
  • http://scripts.sil.org/OFLIn PDF document text
  • http://dejavu.sourceforge.netIn PDF document text
  • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

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