Malicious PDF — malware analysis report

Heuristics 7

• ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
  ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
• 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.
• External URI info PDF_URI
  PDF contains an external URL action
• 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://resalured.ru/wix?keyword=custom+rom+finder+apk PDF link annotation

  • https://s3.amazonaws.com/zarusegibitumet/maytag_dishwasher_quiet_series_300_parts.pdfIn PDF document text
  • https://s3.amazonaws.com/zetubakuz/7531101309.pdfIn PDF document text
  • https://s3.amazonaws.com/dobikasukavu/sony_wega_tv_no_remote.pdfIn PDF document text
  • https://s3.amazonaws.com/fomaralunex/human_body_organization_and_homeostasis_worksheet.pdfIn PDF document text
  • http://uscreditcheck.info/ship_oil_pollution_emergency_plan_sopep7tqeh.pdfIn PDF document text
  • http://katipef.medianewsonline.com/understanding_and_using_english_grammar_4th_edition_free_download.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4386839/normal_5fd5f04dacb6a.pdfIn PDF document text
  • http://smartcreditcheck.info/comptine_dun_autre_t_piano_notesrqvux.pdfIn PDF document text
  • http://tokio-2020.fun/wosomop93f81.pdfIn PDF document text
  • https://s3.amazonaws.com/ribowexulo/kibozawusefafoberok.pdfIn PDF document text
  • https://s3.amazonaws.com/xovekolamoxe/travel_tourism_competitiveness_report_2013.pdfIn PDF document text
  • http://topsalon.xyz/gym_jones_300_workout_resultsv0ony.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4384652/normal_603e9378671d6.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4476282/normal_5fcf046a7cf8a.pdfIn PDF document text
  • https://s3.amazonaws.com/bulolimepol/tyt_th-9800_manual_francais.pdfIn PDF document text
  • https://s3.amazonaws.com/sisaxu/calypso_song_video.pdfIn PDF document text
  • https://s3.amazonaws.com/futamo/http_connected._mcgraw-_hill._com_answers.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • http://www.daltonmaag.com/In PDF document text
  • https://d848e4b6-662b-4424-a759-963270729452.filesusr.com/ugd/30e015_cf82739785d443ae9db3f8bc7f0cda1a.pdf?index=trueIn PDF document text
  • http://limoxukuk.atwebpages.com/universal_laser_systems_pls6.150d_price.pdfIn PDF document text
  • https://73c25812-7308-4b32-b985-10e2a25710ca.filesusr.com/ugd/5b604d_18bf1dd0e9f84f6d83ae9ad647abdeec.pdf?index=trueIn PDF document text
  • https://8df9d1b7-8f6e-49e1-bdac-c9da4d4291fd.filesusr.com/ugd/12c198_9e973040601f43eeaeb402a01bc38e9d.pdf?index=trueIn 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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