Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 4718d9dbbba8a353…

MALICIOUS

PDF / .VIR

170.9 KB Created: 2024-01-30 08:05:55 Authoring application: pstoedit First seen: 2024-05-27
MD5: 516ebce6675d46467df1c4d540594698 SHA-1: ac5f9af82da63573527b80a9ed6046acbb1cbf0c SHA-256: 4718d9dbbba8a353dbee9329307061b372669398b1d2301e3da3a03f7d136fea
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9798

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://davici.ru/bitrix/redirect.php?goto=https://campus.murraystate.edu/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://sezef.theplazahotelbalanga.com/f/72900274 In PDF document text
    • http://www.pickshemale.com/t_pick/ps/2ps.cgi?req=xxx&nt=1&url=https://assets.website-files.com/65e87d49576210f318dfb5d0/662ef4f58162ad449e24387f_movejimomefen.pdfIn PDF document text
    • https://spoq.registercentrum.se/download?fileUrl=https://assets.website-files.com/65dcb0216db9940bbada4d05/662eecd98162ad449e1c36fe_81743829039.pdfIn PDF document text
    • http://gazteplostroy.ru/bitrix/redirect.php?goto=https://assets.website-files.com/65dcc5540003285f2e4b6641/662ef5a09cf27c1b6b54241d_92360515314.pdfIn PDF document text
    • http://motoki-y.sakura.ne.jp/z-meiten/01-05/rl_out.cgi?id=anchor&url=https://uploads-ssl.webflow.com/65f04271cc1107bf595be8c1/662efaaf0acef9692094fab2_zuviweto.pdfIn PDF document text
    • https://www.hawthorneracecourse.com/adserver/www/delivery/ck.php?ct=1oaparams=2__bannerid=358__zoneid=4__cb=62dfa73155__oadest=https://myportal.lakelandcc.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://nulup.supremainmobiliaria.com/f/7020In PDF document text
    • https://www.uvg.edu.gt/anuncios/api/count_link/145?url=https://apollos.edu/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://vibexovu.supremainmobiliaria.com/f/514302300&u=/cit/&fu=https://www.uvg.edu.gt/cit/&name=Banner%20FUVG%20Dona%20aqu%C3%AD&img=Banner_Socios-Donantes-13.pngIn PDF document text
    • http://charmlonghai.vn/https://campus.murraystate.edu/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://folokizivava.ibcphoenix.com/f/50472038In PDF document text
    • https://newsrankey.com/view.html?url=https://nadinmeloth.com/wp-content/plugins/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://maset.sharynideas.com/f/490814868In PDF document text
    • https://wivanetowupuwu.lazav.co.za/6510157718276153074802800?zafoxisivovusuwaserisusadiworisapelifofoxijele=xulepazesixesokateviwubuvazunikizogiluviponubafokujojusigatujafikegulokanotobelujenebimusitejitoravanagabevepimekesabulezelobidegijidokekesolenonomukepiluvimowajasugebufevalivunilosaxavevitobifunejaropew&utm_term=berkshire+family+practice&dusixinekonaburuvutaxigunonapigidavumuxilavatunedotudosarokojazafurako=rotapokulurimopifovifobevogixagoketaremepibipuluwomorajofapesezabaruretekufijagipizamanixufubaferakujapawikegopudimidizibedafewawodIn PDF document text
    • https://wivanetowupuwu.lazav.co.za/6510157718276153074802800?zafoxisivovusuwaserisusadiworisapelifofoxijele=xulepazesixesokateviwubuvazunikizogiluviponubafokujojusigatujafikegulokanotobelujenebimusitejitoravanagabevepimekesabulezelobidegijidokekesolenonomukepiluvimowajasugebufevalivunilosaxavevitobiPDF link annotation
    • https://wivanetowupuwu.lazav.co.za/6510157718276153074802800?zafoxisivovusuwaserisusadiworisapelifofoxijele=xulepazesixesokateviwubuvazunikizogiluviponubafokujojusigatujafikegulokanotobelujenebimusitejitoravanagabevepimekesabulezelobidegijidokekesolenonomukepiluvimowajasugebufevalivunilosaxavevitobifunejaropew&utm_term=berkshire+family+practice&dusixinekonaburuvutaxigunonapigidavumuxilavatunedotudosarokojazafurako=rotapokulurimopifovifobevogixagoketaremepibipuluwomorajofapesezabaruretekufijagipiPDF 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_off00025aa6.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00025aa6.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00025aa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25AA6 15660 bytes
SHA-256: f1d75aa1a755ea3ffc21062fd018b3da2a833f89022fe4c9a8612ab17d58cd76
font_01_sfnt_off000282e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x282E2 11524 bytes
SHA-256: d13e038204ebcc422f16e465a97989b21b7038dd70bb6143fd5c9ae7dd9f12eb