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://cctraff.ru/strik?keyword=mathrubhumi+calendar+2019+october+pdf In PDF document text

  • http://files.gracekuchmusic.com/uploads/1/3/1/4/131453559/jeboli-devumewu.pdfIn PDF document text
  • http://zarokeda.bornphilippines.com/uploads/1/3/0/8/130873915/zebuwodutorowel_lafadobi_dorakolewuz_sibero.pdfIn PDF document text
  • http://xuponoji.rapierediting.com/uploads/1/3/1/8/131856516/jufeji.pdfIn PDF document text
  • http://files.grownfolkmotto.com/uploads/1/3/1/4/131438617/4507341.pdfIn PDF document text
  • https://site-1036811.mozfiles.com/files/1036811/92372570431.pdfIn PDF document text
  • https://site-1036750.mozfiles.com/files/1036750/betat.pdfIn PDF document text
  • https://site-1036955.mozfiles.com/files/1036955/pevunelij.pdfIn PDF document text
  • https://site-1036997.mozfiles.com/files/1036997/wojuxuvomazozarotolonox.pdfIn PDF document text
  • https://site-1036629.mozfiles.com/files/1036629/zudimiwuxoza.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102HussainIn PDF document text
  • http://smc.org.inhttp://smc.org.inIn PDF document text
  • https://uploads.strikinglycdn.com/files/6d10f244-12e1-46e4-b7cb-f9d3b9bef272/38803677835.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/www_cleverbot_com.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/chapter_32_integumentary_skeletal_and_muscular_systems_worksheet_answers.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58933331969.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0434/7982/6589/files/72543889493.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0438/3821/0205/files/baseball_card_price_guide_download.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
  • https://gitlab.com/smc/meera/blob/master/COPYINGIn PDF document text

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