Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 96c57543c4baa05f…

MALICIOUS

PDF / .VIR

448.9 KB Created: 2024-01-03 16:42:22 Authoring application: Smallpdf Desktop First seen: 2025-01-22
MD5: 9c4edd3d43c3ba5e0bb555adb479d7fe SHA-1: eff17aaea6d3e2910bd114af20e1d7021bbcd406 SHA-256: 96c57543c4baa05fe97bfcbb64633cf4e9e013b138148ee6008a32279e44d0f2
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7997

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.pressstore.com.tw/weboffice/epaper.asp?email1=&email2=&hit=yes&refto=https://quanttun.com.br/admin/paginas/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://kotumexebimu.club-directory.com/f/2508&hitid=1634 In PDF document text
    • https://www.mediavolution.tv/Soapbox/index.php?module=PulseReceiver&action=report_stats&switch=logoClicks&video_id=504&redirect=https://hotelmarianasozopol.com/includes/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://tamekupomidumik.thiranmanamalai.com/f/10295In PDF document text
    • http://www.gamekouryaku.com/dq8/search/rank.cgi?id=3552&mode=link&url=https://kokuban-lesson.com/js/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://pikifela.ibcphoenix.com/f/773036547=10126709In PDF document text
    • https://grannysexclub.com/out.php?link=images/4x69x35051&url=https://lessalone.org/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://daxifan.manabi-subete.com/f/75033In PDF document text
    • http://games.cheapdealuk.co.uk/go.php?url=https://admissions.osu.edu/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://fawitavaxuxujo.palsaikbbq.com/f/28574902In PDF document text
    • https://imperial-info.net/link?apps=GXFGRF&idl=GRGQG&idp=GPWXSPP&idt=GFPPLX&url=https://themis.asu.edu/sites/all/libraries/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://jovim.gfxtoolkit.com/f/17147063In PDF document text
    • https://lomekil.norin.co.za/83263861558034571536099435?dafetevogijimaragavuzuvejumuximokuxitivelalazipejesevujovesajatirikanirululo=lijijikaxagogesixizodadimoladudibakoremipedenubuvilikijipebokasabovekowutunalizuburovisudinovosasimipobinokaromegarilepewatizuwatopenomadakisokupexobexorexibigekizanufizunaviporowigefixisokoxoxusemavoduda&utm_term=s%26w+frame+sizes+chart&dizabezopijifivagiremawotejijukapasetusurebovasebulotogejodovarefipev=suxawegumodimiwaduwefugalabawoxivumitigenumibategakasisunodagumuzisetolumodojakiwudifoketigejererebibovosatofizetiworuvozizuwidafibIn PDF document text
    • https://adult-tuber.com/xxx.php?link=video-bookmark&skip_sell=true&url=https://reeferparts.com/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://xigovuwesafoxa.sentineltr.com/f/43101In PDF document text
    • https://lomekil.norin.co.za/83263861558034571536099435?dafetevogijimaragavuzuvejumuximokuxitivelalazipejesevujovesajatirikanirululo=lijijikaxagogesixizodadimoladudibakoremipedenubuvilikijipebokasabovekowutunalizuburovisudinovosasimipobinokaromegarilepewatizuwatopenomadakisokupexobexorexibigekizanufiPDF link annotation
    • https://lomekil.norin.co.za/83263861558034571536099435?dafetevogijimaragavuzuvejumuximokuxitivelalazipejesevujovesajatirikanirululo=lijijikaxagogesixizodadimoladudibakoremipedenubuvilikijipebokasabovekowutunalizuburovisudinovosasimipobinokaromegarilepewatizuwatopenomadakisokupexobexorexibigekizanufizunaviporowigefixisokoxoxusemavoduda&utm_term=s%26w+frame+sizes+chart&dizabezopijifivagiremawotejijukapasetusurebovasebulotogejodovarefipev=suxawegumodimiwaduwefugalabawoxivumitigenumibategakasisunodaPDF link annotation
    • https://journaldesfemmesfr.digidip.net/visit?url=https://vlab.amrita.edu/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://jokena.theplazahotelbalanga.com/f/77852193&ppref=https://sante.journaldesfemmes.fr/quotidien/2590625-nutrition-conseils-bien-manger-aliments-sante/&currurl=https://sante.journaldesfemmes.fr/fiches-nutrition/2697389-vitamine-femme-menopausee-carence-supplementation/In PDF document text
    • https://farzanebarati.blogsky.com/dailylink/?go=https://ecoledesgourmets.com/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://tijinagabad.ibcphoenix.com/f/9933&id=58In 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_off0006a78b.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0006a78b.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006a78b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A78B 18420 bytes
SHA-256: 95cadbe1da1dfc1f153f9ac8be56889ccc93c30c173569d4b6e160bd44bcabbe
font_01_sfnt_off0006d6c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6C4 11792 bytes
SHA-256: ac97d151a39a3b257869a6dc9e4a86acd4c94992eadecb51abb1657b2917abf2