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.
• PHP webshell / backdoor source high WEBSHELL_PHP
  The file contains PHP server-side code with the signature of a webshell/backdoor (request input fed to a command/code-exec sink). A webshell takes attacker input from an HTTP request and runs commands/code on the server. Flagged as a malicious hacktool artifact even when carried inside a document or archive — the code does not execute from the carrier, but the file is a webshell.
• 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.ru/pify?keyword=recommendation+letter+pdf+example In PDF document text

  • http://files.oldfieldtubeamps.com/uploads/1/3/0/9/130969300/9093647.pdfIn PDF document text
  • http://files.mootingsyndicate.org/uploads/1/3/1/4/131483253/lewotidedimitufemini.pdfIn macro / runtime command snippet
  • http://files.andyknappmusic.com/uploads/1/3/1/4/131408062/jusibemik_vususezofedimam.pdfIn PDF document text
  • http://files.beliefne.net/uploads/1/3/1/6/131606262/1668e344.pdfIn PDF document text
  • http://files.oldfieldtubeamps.comIn macro / runtime command snippet
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/2636/6111/files/madizakodewokikonafebefar.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/6472/9512/files/best_viewer_for_windows_xp.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/9359/0167/files/netejinokigazunavebasuj.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/7160/2855/files/powershell_http_server.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0431/5165/5076/files/gokimibovupirigevipe.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0427/9477/8791/files/bebotixebuledufeb.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0438/9850/3336/files/10957102709.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0432/4527/3251/files/fodosimiteseranijokuneget.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0433/6061/6599/files/49101543475.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0439/8707/5230/files/how_to_use_manual_locking_hubs.pdfIn PDF document text
  • https://cdn.shopify.com/s/files/1/0430/3850/7169/files/bepoz.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

Open this report in the interactive analyzer, or submit your own file for analysis.