Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 a8a934f41b5e51b1…

MALICIOUS

PDF / .VIR

322.7 KB Created: 2024-05-01 09:29:53 Authoring application: Pdftk First seen: 2024-05-27
MD5: 90fb09e855d1466191771af8a78a259a SHA-1: 96c8f73cf138c2495911d5f0aa461dd140eec6f8 SHA-256: a8a934f41b5e51b17aeb9222d55b8e46dd26ddd0d16d037be68f9a626e466475
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9880

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ship.sh/link.php?url=https://uploads-ssl.webflow.com/65f04ab954bc714a16532a14/663158c19be987476a8ab6bc_gufitag.pdf In PDF document text
    • http://hugeboobspictures.com/cgi-bin/atx/out.cgi?s=65&u=https://portal.duq.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://zujawufip.sharynideas.com/f/55679In PDF document text
    • http://www.4m.net/Ads2011/www/delivery/ck.php?ct=1&oaparams=2__bannerid=20__zoneid=1__cb=0078406af4__oadest=https://knezha-leader.com/js/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://poramik.palsaikbbq.com/f/79539117In PDF document text
    • https://www.itmexpo.ru/bitrix/redirect.php?goto=https://workforce.colin.edu/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://lutaratexobuw.theplazahotelbalanga.com/f/20146964In PDF document text
    • https://www.fanmood.com/out/https://assets.website-files.com/65fffbe1e2ebce24aaf33094/663156d89be987476a88e37b_22059702429.pdfIn PDF document text
    • http://vestnik-glonass.ru/bitrix/rk.php?goto=https://5.imimg.com/data5/SELLER/Doc/2024/4/414926831/EU/EA/CF/221083508/13114501961.pdfIn PDF document text
    • https://www.byggsverige.se/Loggning/log_redir.asp?RedirURL=https://uploads-ssl.webflow.com/65ffddd2590d432567a80470/6631485ad1232096dca7a173_16299768093.pdf&PageName=Start_Tipsa.asp&FromPage=&ForetagsNr=&KundNr=1044790&LevNr=348476&Logotype=sbg.gif&ActionText=URL_BannerIn PDF document text
    • https://www.chromefans.org/base/xh_go.php?u=https://assets.website-files.com/65dca51d8fe3de07815f9d8b/66314d2c146c08aac8ee3799_39821698655.pdfIn PDF document text
    • http://www.tdgtmp.org.tw/netlink/hits.php?id=4&url=https://my.southwest.tn.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://zobukelav.theplazahotelbalanga.com/f/90866105In PDF document text
    • http://travel4you.com/cgi-bin/hi.pl?language=en&codjobid=CU2-98939c9a93J&codobj=CU2-98939c9a93J&url=https://assets.website-files.com/660053fdd563105ac6fd0c02/6631518b96121bcb9d81a938_vofeput.pdfIn PDF document text
    • https://eventiyoga.it/gotourl/?url=https://lawnetportal.law.columbia.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://dudolaxiw.theplazahotelbalanga.com/f/6222&id=19006In PDF document text
    • https://www.google.com.bz/travel/clk?pc=AA80OsyrUy-KHi35yJ1-cGXS3RH6fUoJ7uBwjVXg4ys5IjK__sxpbO12gxZhxE3idC-3yaGiKg0rp7VEz3K9FjTQ7uFVchI9uDFrBDFPaXSbQJIwfcivRuVUTqul6g&pcurl=https://www.kimsbikes.com/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://munaduwawu.ibcphoenix.com/f/242855837&ap=1In PDF document text
    • https://happycoin.club/goto/https://assets.website-files.com/65dcb1d845008c1d93dbcbdb/66314436ff9fab1c2b70f72f_suzulupexibotobafikapi.pdfIn PDF document text
    • https://bluffler.com/goto/https://activity.scar.gmu.edu/sites/all/modules/fckeditor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://wanixaj.skyangelus.com/f/3218In PDF document text
    • http://www.hipsternudes.com/cgi-bin/atx/out.cgi?id=112&trade=https://lib.bsu.edu/common/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://litunodurufesit.supremainmobiliaria.com/f/58046In PDF document text
    • https://bannedretro.co.uk/https://laserchallenge.net/sites/all/modules/fckeditor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://fugusaf.palsaikbbq.com/f/67306In PDF document text
    • http://www.pixelpromo.ru/bitrix/redirect.php?event1=click_to_call&event2=&event3=&goto=https://assets.website-files.com/65dcb494b44c7b95ec569be2/66314bd6cdd96a6fc8de9cb7_14319332630.pdfIn PDF document text
    • https://mawewogexojara.urseghy.com/58282886749024307483811293?sutibusimatulikozelizefaxata=porisoripanonoraneruzewepazanazovolosalogakematebasakelikofolutudigugogulanomodezusabawogevigaxitajuvidekixabukidakokeluxobugapenexasuvowufuwevexefipiretijurexobelajunadatapukofikusolawenorimutemotobebuzodo&keyword=walter+martin+bible+answer+man&rogazuzawotutitamuvogifizudotemidowarofazijogedamoxeduwozuribonirinupujukegidagamonimezegiputujolow=besimazobokajemomewigixenujojupuwudotujobiwisabijametawijotudobubipipakixazawifojixotimifelurovobewireletifizekiditepojikorotegIn PDF document text
    • https://mawewogexojara.urseghy.com/58282886749024307483811293?sutibusimatulikozelizefaxata=porisoripanonoraneruzewepazanazovolosalogakematebasakelikofolutudigugogulanomodezusabawogevigaxitajuvidekixabukidakokeluxobugapenexasuvowufuwevexefipiretijurexobelajunadatapukofikusolawenorimutemotobebuzodo&kePDF link annotation
    • https://mawewogexojara.urseghy.com/58282886749024307483811293?sutibusimatulikozelizefaxata=porisoripanonoraneruzewepazanazovolosalogakematebasakelikofolutudigugogulanomodezusabawogevigaxitajuvidekixabukidakokeluxobugapenexasuvowufuwevexefipiretijurexobelajunadatapukofikusolawenorimutemotobebuzodo&keyword=walter+martin+bible+answer+man&rogazuzawotutitamuvogifizudotemidowarofazijogedamoxeduwozuribonirinupujukegidagamonimezegiputujolow=besimazobokajemomewigixenujojupuwudotujobiwisabijametawijotudobPDF link annotation
    • https://wap.justdial.com/verticals/hotel/redirect?stype=url&docid=9999PMULKOLSTD8265&checkin=2019-12-16&checkout=2019-12-17&rurl=https://assets.website-files.com/660036d82bf4dc146625b6e7/66315636108811f51a45e3dc_munoj.pdf&source=2&vid=71&ll=dtlpg&li=allprices_Booking.com&cinfo=192.168.12.101%2C+192.168.20.101&justdialShowShare=0In PDF document text
    • https://websecure.dealer.reyrey.net/ElementSettings/mthforestlake.com/ViewSwitcher/SwitchView?mobile=True&returnUrl=https://midst.sabanciuniv.edu/admin/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://tubetikusep.palsaikbbq.com/f/860125102In PDF document text
    • https://unm-community.symplicity.com/track/6bb447477e7f1359de554943c77c7de6/4175606502/realurl=https://workforce.colin.edu/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://wekogetetikem.manabi-subete.com/f/357987961In 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_off0004b81e.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0004b81e.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004b81e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B81E 10440 bytes
SHA-256: 3fe5d2ca1a0d80ca02e7ed761e6de0ced66e674ff413220151e7c36ba00b22e8
font_01_sfnt_off0004cfd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CFD1 16508 bytes
SHA-256: 98cb75e83c6a0b2d6583c62fa44cac56f3ee5a099897d518493c8cf7505a79be