Malicious PDF — malware analysis report

Heuristics 8

• 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.
• Document signing service impersonation lure medium SE_DOCUSIGN_LURE
  Document impersonates DocuSign, Adobe Sign, or a similar signing service in a signing-request context
• Fake invoice / payment lure low SE_INVOICE_LURE
  Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
• 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.cc/pify?keyword=how+do+i+electronically+sign+a+pdf+on+my+ipad In PDF document text

  • http://lijak.slcfaaa.com/uploads/1/3/0/7/130776208/4545642.pdfIn PDF document text
  • http://vosipawu.baarleproeft.com/uploads/1/3/2/3/132302921/roxena.pdfIn PDF document text
  • http://files.dogknows.co/uploads/1/3/1/3/131380612/eb4d7.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/1/0437/7437/8142/files/72072599730.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/7650/1148/files/swagger_api_testing_tutorial.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/4780083199.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/5371/9453/files/26331205601.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/2725/9811/files/54059387263.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tosinumemelijigejidab.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/2696/4903/files/20754398480.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xizijifopaxefiz.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0447/8061/7885/files/cardinal_sarah_the_power_of_silence.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0429/6228/8793/files/zalud.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0435/3179/6629/files/method_of_applied_mathematics_book.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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