Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 99c56b08ed721672…

MALICIOUS

PDF / .VIR

528.1 KB Created: 2024-03-02 03:21:02 Authoring application: Karbon First seen: 2024-07-08
MD5: eff3f8d129bba9697cbba4f943136894 SHA-1: 87cc15b8e510dd7e7f90f64feff4d99a04cbae2c SHA-256: 99c56b08ed721672b24470f411116bceb6802f924375a4e8c147316f942a2284
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7415

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.bringthenoiseuk.com/music-news-the-damned-announce-2018-evil-spirits-uk-tour?administer_redirect_32=https://uploads-ssl.webflow.com/65dcbb34cb8b8b817d666c20/66333183b2be282ceb4dd3a8_59302074617.pdf In PDF document text
    • https://averygreenehonda.com/ElementSettings/averygreenehonda.com/ViewSwitcher/SwitchView?mobile=True&returnUrl=https://uploads-ssl.webflow.com/65ffec4ca5efd4c62c5b80a1/663330c8d3bd292bc56374b0_8391316223.pdfIn PDF document text
    • https://www.gointranet.com/application/neo/admin/eblast_tracker.jsp?blastID=27568&newTaskId=77188&L=Y&contactID=60680&table_name=pc&batchID=5663&link_url=https://uploads-ssl.webflow.com/65dcb642bcaf94449bf03fb0/663326db460ef02a97fa7ba9_rimukuwe.pdfIn PDF document text
    • http://franks-soundexpress.de/Book/go.php?url=https://assets.website-files.com/660026cefdfbc3c2ddd6b13b/663331ba93211a1629128726_moxixepewima.pdfIn PDF document text
    • http://hobby-planet.com/rank.cgi?mode=link&id=1290&url=https://paine.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://nedozi.supremainmobiliaria.com/f/55639635In PDF document text
    • http://libopac.hbcse.tifr.res.in:5000/cgi-bin/koha/tracklinks.pl?uri=https://assets.website-files.com/65f0427a09ca3e2485b6d8c6/663330b551c2645d47393ac6_52098545286.pdfIn PDF document text
    • https://honeyrosecbd.co.uk/https://homegrownbiodynamics.com/wysiwyg/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://ximejixukaxiz.mytickethomeband.com/f/1712In PDF document text
    • http://tstz.com/link.php?url=https://www.steu.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://fakagofoxoz.sharynideas.com/f/49875956In PDF document text
    • https://www.dodeley.com/?action=track_link&nh=0498b76a320aee7c36942926866cfc94&ah=dfeb99cdfcf6f7fc01785f979eff8ea3&rh=1eb1ec74f64f2c5a61b5c685a4ca98ab&u=https://uploads-ssl.webflow.com/65ffe35b2d867d3a3a789abc/66332898517b9fc7a7b5ec04_nukupefolizubebekobidasa.pdfIn PDF document text
    • http://123.fmddd.com/home/jump/index?link=https://gyorsinfo.com/sites/all/modules/fckeditor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://gubub.skyangelus.com/f/27909994&id=701&name=secretgardensIn PDF document text
    • https://igrajdanin.ru/bitrix/redirect.php?event1=click_to_call&event2=&event3=&goto=https://uploads-ssl.webflow.com/65dcb5427a20a6808bb2a85c/6633318851c2645d4739db8c_tazudowutavofasurizoje.pdfIn PDF document text
    • https://zibintai.autopolis.lt/modules/banner/banner.php?page_id=34&banner_id=406&url=https://uploads-ssl.webflow.com/65dcb942102aaeb00b14168c/66332ee5e721b0c50368b50d_kunov.pdfIn PDF document text
    • http://stefanovikashti.net/wp-content/themes/eatery/nav.php?-Menu-=https://assets.website-files.com/65f03b7188da524c516a0a00/6633328db2be282ceb4eab2b_nugifepijasuxuje.pdfIn PDF document text
    • http://www.grannysex.cc/cgi-bin/atc/out.cgi?s=55&u=https://assets.website-files.com/65fff858c835756ac2e62b49/663327a82f7a2f5af62a9fce_sefaruwa.pdfIn PDF document text
    • https://intelektosoluciones.com/kontakto/03cebbbc-5bb6-48d9-ae94-dc40a0ed5afc/linkto/www/989?url=https://uploads-ssl.webflow.com/65ffd4f16bdd8e62acab27fa/6633245cbcfcb0aa455d5157_rijibe.pdfIn PDF document text
    • https://sso.smartben.com/SSO/AlternateCredentials?url=https://jagwire.tamusa.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://kotawutomafuga.thiranmanamalai.com/f/38043938In PDF document text
    • https://xn--80ajjlhchaipiexs.xn--p1ai/bitrix/redirect.php?goto=https://assets.website-files.com/65e88444925b968b005b0ecd/663326a9826edb862798e0bc_9541734551.pdf&url=bw.heldforranson.com/5457-symptoms-and-diagnosis-of-rickets-in-calves-treatmen.htmlIn PDF document text
    • http://naris-elm.com/?wptouch_switch=desktop&redirect=https://workforce.colin.edu/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://zabedinumakuxu.gmcalaya.com/f/54099In PDF document text
    • https://ism-onweb.jp/analyze/acs9.cgi?idnm=link03_Kawabata&url=https://assets.website-files.com/65e87753f0e6bf5d535216c9/66332ae2b2bf1dc44b9363b3_defaxetenagubisebos.pdfIn PDF document text
    • https://vomazowubijeba.tevav.co.za/90757118403065580498462146?bexenawiruwinogozazivexugug=vanobuxekajivuzaxejakasijavimipubagifokubizunuxiwewejexumunukujetibosavizejaruvisegonitifodefiximuxobokudixejidukokakalasewopupabusofegiwukavuxuvoximejuwakavabotolebugowefavuzanikogadawavoxofolukolovumekop&utm_term=main+verbs+and+helping+verbs+worksheet&medoxewaxesiginisekuxewozutotunifawelixereboba=kamajejirazotilopupunixelusinugunelexudokiwuruzirodalolomatorazigawupifageparumajafawosotilutotirabodipukuwudenoxawuwotonaIn PDF document text
    • https://www.ews-ingenieure.com/index.php?url=https://my.aum.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://xuzajivaro.gfxtoolkit.com/f/8114712In PDF document text
    • https://vomazowubijeba.tevav.co.za/90757118403065580498462146?bexenawiruwinogozazivexugug=vanobuxekajivuzaxejakasijavimipubagifokubizunuxiwewejexumunukujetibosavizejaruvisegonitifodefiximuxobokudixejidukokakalasewopupabusofegiwukavuxuvoximejuwakavabotolebugowefavuzanikogadawavoxofolukolovumekop&utm_PDF link annotation
    • https://vomazowubijeba.tevav.co.za/90757118403065580498462146?bexenawiruwinogozazivexugug=vanobuxekajivuzaxejakasijavimipubagifokubizunuxiwewejexumunukujetibosavizejaruvisegonitifodefiximuxobokudixejidukokakalasewopupabusofegiwukavuxuvoximejuwakavabotolebugowefavuzanikogadawavoxofolukolovumekop&utm_term=main+verbs+and+helping+verbs+worksheet&medoxewaxesiginisekuxewozutotunifawelixereboba=kamajejirazotilopupunixelusinugunelexudokiwuruzirodalolomatorazigawupifageparumajafawosotilutotirabodipukuwudPDF link annotation
    • https://www.precisioncancermedicine.osu.edu/url?q=https://artgallery.umd.edu/sites/all/libraries/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://getakudapibapa.theplazahotelbalanga.com/f/46160391In PDF document text
    • https://system88.blogsky.com/dailylink/?go=https://uploads-ssl.webflow.com/65e877bca57066ca452b4066/6633271621bab3da8ed0c032_xulomi.pdf&id=1In 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_off0007e722.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0007e722.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0007e722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E722 12100 bytes
SHA-256: 52dbe61bea8fc8e453a4baaf199a954d2ba9135e5c1d16a67f88c60e6485a5da
font_01_sfnt_off000803d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x803D5 16856 bytes
SHA-256: 083dc70a95912ff500ca65f8e02564826b87f4ea664bc11f670557b0fad199ac