Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 5b715d09e7abd63d…

MALICIOUS

PDF / .VIR

650.8 KB Created: 2024-02-01 19:59:50 Authoring application: GIMP First seen: 2024-05-27
MD5: 9ea84a4008e85466d58fe0e1690c98fc SHA-1: 93b3280d08e87e4c5f67046b5fac46721c31c816 SHA-256: 5b715d09e7abd63dba238ab6344e461c70be483ca969595de2f699ce74a5c49f
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6542

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 http://www.eurocom.ru/bitrix/rk.php?goto=https://rdflorist.com/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://supopixexarelux.palsaikbbq.com/f/75338 In PDF document text
    • http://trackmailing.com/clickTracking.aspx?redirect=https://newmediadl.cas.msu.edu/sites/all/libraries/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://wubezape.supremainmobiliaria.com/f/33953&entry=1-gQfYwRk7EeaAzQAVF90jfA-1rINj5Y1Eea6iwAVXehgBg&track=true&opt=ConfirmIn PDF document text
    • https://www.imolko.com/aurora-ws/m/0/524e30eebb7094b96d795951/2ed32b8e?u=https://artful-design.stanford.edu/sites/all/modules/fckeditor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://bafodef.gmcalaya.com/f/89953046In PDF document text
    • https://kgoal-boost.com/boost.php?linkto=https://my.canisius.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://javavuv.salvaralbucardo.com/f/32810&hl=esIn PDF document text
    • http://hansolav.net/blog/ct.ashx?id=0af6301b-e71f-44be-838f-905709eee792&url=https://my.marist.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://powowuva.club-directory.com/f/60550099In PDF document text
    • http://www.audio-q.com/down/down.cgi?Luxeon-BIN=https://www.paine.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://zejoxabemifaxaf.thiranmanamalai.com/f/71266224In PDF document text
    • https://jitsys.ru/bitrix/redirect.php?event1=click_to_call&event2=&event3=&goto=https://assets.website-files.com/65dcd8f89614673cc8dd129c/6631aa6ffc72ddaca96195e0_motogajitozovonasuka.pdfIn PDF document text
    • https://luguferenenuke.femato.co.za/65367008975624644297417812?wufovojowujoremosazakulozutewaxoxe=zorabitirajuropinujipoxetobexikizezesomodozisigitogemivumuvanofikuwixajopozenovegegesexenenajegitulokoweribemugarizikuzuvuwozoxarufumunapuxinaxiremoxafazujasizevoxerodidusanemewolepozigexuzukuleruzusokemifu&utm_term=basketball+trivia+2024&tilokadoligabadufefebelepotoregosuvupiriladusakilotoxuvu=mujidimuporaruvomipuxikoleropapafowikuposufipetozuwenikegopefanibizuruleluwokujepesenesapasonadedolefojosigokenIn PDF document text
    • http://openmoscow.ru/go.php?url=https://grail.stanford.edu/sites/all/modules/fckeditor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://sotiwak.ibcphoenix.com/f/71043In PDF document text
    • http://sinhvien.lic.edu.vn/FileManager/ViewFileOnline?filePath=https://www.ubalt.edu/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://xodotufegamefo.club-directory.com/f/18082&fileName=Th%E1%BB%9Di%20kho%C3%A1%20bi%E1%BB%83u%20kho%C3%A1%204%20In PDF document text
    • https://luguferenenuke.femato.co.za/65367008975624644297417812?wufovojowujoremosazakulozutewaxoxe=zorabitirajuropinujipoxetobexikizezesomodozisigitogemivumuvanofikuwixajopozenovegegesexenenajegitulokoweribemugarizikuzuvuwozoxarufumunapuxinaxiremoxafazujasizevoxerodidusanemewolepozigexuzukuleruzusokePDF link annotation
    • https://luguferenenuke.femato.co.za/65367008975624644297417812?wufovojowujoremosazakulozutewaxoxe=zorabitirajuropinujipoxetobexikizezesomodozisigitogemivumuvanofikuwixajopozenovegegesexenenajegitulokoweribemugarizikuzuvuwozoxarufumunapuxinaxiremoxafazujasizevoxerodidusanemewolepozigexuzukuleruzusokemifu&utm_term=basketball+trivia+2024&tilokadoligabadufefebelepotoregosuvupiriladusakilotoxuvu=mujidimuporaruvomipuxikoleropapafowikuposufipetozuwenikegopefanibizuruleluwokujepesenesapasonadedolefojosiPDF link annotation
    • 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_off0009d6b8.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0009d6b8.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0009d6b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D6B8 12388 bytes
SHA-256: b6c0286259145af7a1fa965c01d6e844ee5ced68c302077f67859ee8d4043a3c
font_01_sfnt_off0009f460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F460 15412 bytes
SHA-256: 038de005cf7654eafe3a36abb7e8bef036cb5b3957203c31f0cafeae337472c5