Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 c766bbe9f0287cc8…

MALICIOUS

PDF / .VIR

90.9 KB Created: 2024-04-27 11:47:24 Authoring application: Mobipocket Creator First seen: 2024-07-06
MD5: d07463716ed54c79d85abc10e8a24a7b SHA-1: 072dd401168d06a29d899f7d86edf13c7b3f642c SHA-256: c766bbe9f0287cc88488e73adcaf65b7bb62aa4d0323d786cc6bd0fc6c273f64
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5779

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://officemelochi.ru/bitrix/redirect.php?goto=https://iconnect.mwcc.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://musowowolodi.sharynideas.com/f/61449 In PDF document text
    • http://www.regiaonoroeste.com/portal/redirect.php?codig=2226&urllink=https://rgbavocats.com/js/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://fazuwelo.sharynideas.com/f/61900In PDF document text
    • https://catalog.flexcom.ru/go?z=33380&i=55&u=https://make.duke.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://foxarukigogubag.mytickethomeband.com/f/95727031In PDF document text
    • https://grannymovies.pro/xxx.php?link=video&p=100&u=https://lib.bsu.edu/common/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://bugefazom.ibcphoenix.com/f/3206273In PDF document text
    • https://dolub.tevav.co.za/48564001092596603182298510?zudawusuxojutodoxipalilivimimetamozabibasesowonoterinuvidotubupalukadupitexowolebalagaxironoju=nejulogulorejonaronolovupufuzigenogenumofekusunesamotejerivupodepomipegenikodutubimabopafekiralavatexusonigipanevudodevefumokexijinorepiduvivaxalebimefolanamorarapetijekerujivetosusuxesotewonegatonaxisuwep&keyword=the+making+of+the+fittest+evolving+switches+evolving+bodies+answers&laxewegolubemozateronopufelonedibuwuxilepabopamaxagivibu=wugujiwozulusawuvaradozusizekefuwiwiwalerateguvunemibenimitatenefipijomikidonenazulelapobuxitunexozupogapirufobodisatasazamugademomodawIn PDF document text
    • https://dolub.tevav.co.za/48564001092596603182298510?zudawusuxojutodoxipalilivimimetamozabibasesowonoterinuvidotubupalukadupitexowolebalagaxironoju=nejulogulorejonaronolovupufuzigenogenumofekusunesamotejerivupodepomipegenikodutubimabopafekiralavatexusonigipanevudodevefumokexijinorepiduvivaxalebimefolanamorarapetijekerujivetosusuxesotewonegatonaxisuwep&keyword=the+making+of+the+fittest+evolving+switches+evolving+bodies+answers&laxewegolubemozateronopufelonedibuwuxilepabopamaxagivibu=wugujiwozulusPDF link annotation
    • https://dolub.tevav.co.za/48564001092596603182298510?zudawusuxojutodoxipalilivimimetamozabibasesowonoterinuvidotubupalukadupitexowolebalagaxironoju=nejulogulorejonaronolovupufuzigenogenumofekusunesamotejerivupodepomipegenikodutubimabopafekiralavatexusonigipanevudodevefumokexijinorepiduvivaxalebimefoPDF 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_off00012286.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00012286.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012286.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12286 13928 bytes
SHA-256: b02efea83ba7617052351c5663140d1b4d2f0f3f3f55fd106c5ee50eaf096bfd
font_01_sfnt_off00014501.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14501 11880 bytes
SHA-256: 5b75b7e7c13f3bd4d1792b482313112d9b629edadd2aa53148f888eadaeab9d8