Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 fc85b8e2303d981c…

MALICIOUS

PDF / .VIR

407.9 KB Created: 2024-03-30 20:27:23 Authoring application: LibreOffice First seen: 2024-05-27
MD5: afb4538ad8a936600e4906c0beba1499 SHA-1: e39a9893f50b0ba35cec01b0dce95b70119da804 SHA-256: fc85b8e2303d981c1ce0e7988e4352ed8842052138ad96b5663d2be239dc8116
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9310

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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • 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://curatedeats.com/sg/clicklog.php?s1=158&s2=Wine%20Connection&s3=admin&s4=John&s5=https://assets.website-files.com/660014a8120ce91830bf5e0c/663006c5da09792ca04cb9d4_90103037679.pdf&s6=https://assets.website-files.com/660014a8120ce91830bf5e0c/663006c5da09792ca04cb9d4_90103037679.pdf In PDF document text
    • https://cyberhead.ru/redirect/?url=https://got1shop.com/includes/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://zesuzexud.theplazahotelbalanga.com/f/48076758In PDF document text
    • http://aurki.com/jarioa/redirect?id_feed=436&url=https://themis.mars.asu.edu/sites/all/libraries/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://xopozelimop.ibcphoenix.com/f/51381In PDF document text
    • https://lrc.hnu.edu.ph/cgi-bin/koha/tracklinks.pl?uri=https://signups.med.nyu.edu/sites/all/modules/fckeditor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://wakebutito.ibcphoenix.com/f/7056315&biblionumber=78035In PDF document text
    • https://an-ink.nl/https://artful-design.stanford.edu/sites/all/modules/fckeditor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://lepison.supremainmobiliaria.com/f/51623In PDF document text
    • https://www.mestomladih.si/ordering_form?bsa_pro_id=111&bsa_pro_url=https://cctsiapps.ucdenver.edu/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://wegiw.sharynideas.com/f/19881973In PDF document text
    • https://opumo.net/api/redirect?url=https://www.colin.edu/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://wujuma.salvaralbucardo.com/f/75082708In PDF document text
    • https://freexxx18.net/xxx.php?link=video&p=100&u=https://assets.website-files.com/6600191852db2e4c088b1a48/663016123b1ec3a2c681e920_21485325237.pdfIn PDF document text
    • http://www.konczewice.pl/?wptouch_switch=desktop&redirect=https://grail.stanford.edu/sites/all/modules/fckeditor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://sivozenaxes.manabi-subete.com/f/80473In PDF document text
    • https://www.indsex.net/g.php?u=https://osouji-ouji.com/wp-content/plugins/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://jedukanobe.supremainmobiliaria.com/f/53221In PDF document text
    • http://tstz.com/link.php?url=https://www.ubalt.edu/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://rogas.sentineltr.com/f/1420In PDF document text
    • https://www.asianporn24.com/xxx.php?link=video-bookmark&skip_sell=true&url=https://5.imimg.com/data5/SELLER/Doc/2024/4/414603537/BL/GW/XH/220990030/a2a93136-ef62-40db-91b5-d06354f63206.pdfIn PDF document text
    • https://xn----ptbeiljj3c5a.xn--p1ai/bitrix/redirect.php?goto=https://uploads-ssl.webflow.com/65f0202151a944a085c7d4f5/663016330278f877d25edf7d_32414399293.pdfIn PDF document text
    • http://yeolcoatl.net/tie/goVideo.php?id=JunioBonneyCross_0&url=https://assets.website-files.com/660041838ca92e548d066cf6/663002e4342f812e7d07b68a_sanixagexemit.pdfIn PDF document text
    • https://www.keesthijn.nl/?setLanguage=1&returnUrl=https://igbths.com/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://jogab.gmcalaya.com/f/7318927In PDF document text
    • http://tschool1.ru/bitrix/rk.php?id=17&site_id=s1&event1=banner&event2=click&goto=https://uploads-ssl.webflow.com/66003b2a97fdea31bc502417/663004beee7ccf9736620cb8_37970756207.pdfIn PDF document text
    • http://vidioptica.ru/bitrix/redirect.php?event1=click_to_call&event2=&event3=&goto=https://www.mondragon.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://somekije.sharynideas.com/f/81822In PDF document text
    • https://matras-vatniy.ru/links.php?go=https://uploads-ssl.webflow.com/65dcb7620cdf8a462d649f53/663007c8d57e8d54029be0f5_rubuvoritowudelepa.pdfIn PDF document text
    • https://tenderix.ru/bitrix/redirect.php?event1=click_to_call&event2=&event3=&goto=https://signups.med.nyu.edu/sites/all/modules/fckeditor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://jurekejetolure.supremainmobiliaria.com/f/96590In PDF document text
    • https://vitexadubuti.haviol.co.za/39030880739825909392055718?midatopedurikoxigobodadevewagoritojupumowoxetinok=ravajiwuzudelevipozupagokojurenimopivomutofiworowedinagedejutusegisolejamuwedepebaxemazopesuwemokitalisepidugosuwetobakavitososatubojodatarukopiritaxovanotalesamemudujadukukixuvefenubifojolafubusudezozabumuj&keyword=richard+wright+public+charter+school&bapezisokimoxikizijumopupitiditajoginatezuzuxibirenesanexopuxinunupamotiset=togebubinezuwokekepozabumepekumumajoditibevudiwubobukowekimewakadaverexenivimikosilufoxigimewupidamodotibamonepefodolajuzojijerixifiridedeviwaIn PDF document text
    • http://www.eshoppinguk.co.uk/go.php?url=https://uploads-ssl.webflow.com/66000e87e9c8c821344f9e70/663005ad07b23622edba462d_gugemujopukob.pdfIn PDF document text
    • https://vitexadubuti.haviol.co.za/39030880739825909392055718?midatopedurikoxigobodadevewagoritojupumowoxetinok=ravajiwuzudelevipozupagokojurenimopivomutofiworowedinagedejutusegisolejamuwedepebaxemazopesuwemokitalisepidugosuwetobakavitososatubojodatarukopiritaxovanotalesamemudujadukukixuvefenubifojolPDF link annotation
    • https://vitexadubuti.haviol.co.za/39030880739825909392055718?midatopedurikoxigobodadevewagoritojupumowoxetinok=ravajiwuzudelevipozupagokojurenimopivomutofiworowedinagedejutusegisolejamuwedepebaxemazopesuwemokitalisepidugosuwetobakavitososatubojodatarukopiritaxovanotalesamemudujadukukixuvefenubifojolafubusudezozabumuj&keyword=richard+wright+public+charter+school&bapezisokimoxikizijumopupitiditajoginatezuzuxibirenesanexopuxinunupamotiset=togebubinezuwokekepozabumepekumumajoditibevudiwubobukowekimePDF link annotation
    • https://m.nuevo.redeletras.com/show.link.php?url=https://infotechsystemsonline.com/admin/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://basazokexoz.gfxtoolkit.com/f/10406033In PDF document text
    • https://www.tennisexplorer.com/redirect/?url=https://5.imimg.com/data5/SELLER/Doc/2024/4/414602447/TG/CA/KT/220989461/a75dddaa-232e-4d84-bec1-ba2de881d1c3.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00060932.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00060932.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00060932.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60932 16332 bytes
SHA-256: b9d60ad5a3b5972bbef2f995ce20a8f69ee9a2d124e368938fa700f4ba425ce9
font_01_sfnt_off00063368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63368 11976 bytes
SHA-256: 0e6af8a224f45a387ea59988d8580ba1bf187ed12443e56fa15287de881f15aa