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
• PHP webshell / backdoor source critical WEBSHELL_PHP
  The file contains PHP server-side code with the signature of a webshell/backdoor (named PHP webshell banner (C99Shell)). 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.
• 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.
• 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://kuzutuzo.ru/strik?utm_term=burp+suite+tutorial+sql+injection+pdf PDF link annotation

  • https://gitodaxip.weebly.com/uploads/1/3/5/9/135960033/5383338.pdfIn PDF document text
  • https://deluneruniji.weebly.com/uploads/1/3/4/0/134012649/pepije-josobed.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4453889/normal_60415e74f16b9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4500447/normal_60413a2cdd946.pdfIn PDF document text
  • https://daxusumupazi.weebly.com/uploads/1/3/4/7/134702932/gowimenazetawimi.pdfIn PDF document text
  • https://static.s123-cdn-static.com/uploads/4407331/normal_6007ef1aa2820.pdfIn PDF document text
  • https://turamidiwirak.weebly.com/uploads/1/3/4/3/134340523/pajipaserumiba.pdfIn PDF document text
  • https://buvapubadoloj.weebly.com/uploads/1/3/4/2/134265521/forakum.pdfIn PDF document text
  • https://vewewiganivobob.weebly.com/uploads/1/3/4/8/134852084/debuvimomutal.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4461791/normal_603d2c94d6be9.pdfIn PDF document text
  • https://cdn-cms.f-static.net/uploads/4367301/normal_6036219a6d768.pdfIn PDF document text
  • https://pakurematumomu.weebly.com/uploads/1/3/4/7/134764434/d937875.pdfIn PDF document text
  • https://nakigere.weebly.com/uploads/1/3/4/6/134608851/piselelito-sijufaxogo.pdfIn PDF document text
  • http://www.ascendercorp.com/In PDF document text
  • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
  • https://s3.amazonaws.com/kuboki/zorba_the_greek_movie_netflix.pdfIn PDF document text
  • https://s3.amazonaws.com/dosalapasenow/igbo_worship_songs_audio.pdfIn PDF document text
  • https://s3.amazonaws.com/wazorixekunafob/26534344033.pdfIn PDF document text
  • https://s3.amazonaws.com/pokixovuxik/jipefogo.pdfIn PDF document text
  • https://s3.amazonaws.com/wogikokuzotaxa/cavatina_music_sheet_piano.pdfIn PDF document text
  • https://s3.amazonaws.com/dowadotiju/40086197033.pdfIn PDF document text
  • https://s3.amazonaws.com/tevomenil/how_to_do_night_time_potty_training.pdfIn PDF document text
  • https://s3.amazonaws.com/fotojipifuzitul/43694479778.pdfIn PDF document text
  • https://s3.amazonaws.com/zifozujiwi/hp_pavilion_dv6_manual.pdfIn PDF document text
  • https://s3.amazonaws.com/faduxodiwo/robin_hood_movies_list_imdb.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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