Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 7ba51b8d3cf4a23c…

MALICIOUS

PDF / .VIR

675.3 KB Created: 2024-03-20 07:40:53 Authoring application: OpenOffice.org First seen: 2024-05-12
MD5: 972581d1f3afc1792c17e903f44746c5 SHA-1: 2bc5e533d9b6ff0f7764ecf3c0053a9ecb096a84 SHA-256: 7ba51b8d3cf4a23c0fc871404e4b007da6d245f6961c81316871fb89bf09b35a
216 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4593

Heuristics 8

  • 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.
  • PDF carries a PHP-gateway SEO-spam PDF link farm medium PDF_SEO_PHP_GATEWAY_LINK_FARM
    PDF contains four or more clickable links whose target is a `.php` gateway with a multi-word search-PHRASE document slug embedded after it (e.g. 'index.php?.../binary+options+trading+nz.pdf' or 'pdf.php/cialis-dosage-side-effects.pdf'). Legitimate PHP-served documents use a filename or numeric id, not a search-query phrase, so this is the generated SEO link-farm shape — pharma / binary-options / 'free download' spam that ranks for queries and routes users into payload/redirect chains. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://racionall.ru/bitrix/click.php?goto=https://5.imimg.com/data5/SELLER/Doc/2024/3/402044275/WF/TH/ZS/216996545/c2689927-dc51-4861-830b-215212d3a18f.pdf In PDF document text
    • http://taichiclassescork.com/?wptouch_switch=desktop&redirect=https://5.imimg.com/data5/SELLER/Doc/2024/3/402003200/ZR/CI/NL/216996536/ade711eb-0164-4589-9fa8-7b30dd606d37.pdfIn PDF document text
    • https://my.tvnet.if.ua/connect_lang/en?next=https://assets.website-files.com/65f04896682bf8bc2554b917/65f951bd4a3a623c366bfabc_kujatefojalodudowatovufe.pdfIn PDF document text
    • http://www.1ur-agency.ru/go.php?url=https://5.imimg.com/data5/SELLER/Doc/2024/3/402010363/SC/TY/NX/216997281/2f28bb03-9d1e-4e23-9531-89c71003617b.pdfIn PDF document text
    • https://my.gainloyalty.com/setcookieandreturn?returnto=https://5.imimg.com/data5/SELLER/Doc/2024/3/402014650/VT/VI/YH/216997298/dorolezutaduku.pdfIn PDF document text
    • https://www.nextdoortease.com/cgi-bin/at3/out.cgi??id=262&trade=https://belopina.online/wp-content/uploads/2024/02/1741.pdfIn PDF document text
    • https://lacotedesmontres.com/cgi-bin/stat_click.cgi?lien=https://zoxiduri.online/wp-content/uploads/2024/01/wewakaxagetusuva.pdf&FR=GBIn PDF document text
    • http://gundemekonometre.com/advertising.php?r=2&l=https://assets.website-files.com/65f046edb65c4658bcb9955a/65f951d34240a5c292398988_33074635038.pdfIn PDF document text
    • http://www.reference-cannabis.com/interface/sortie.php?adresse=https://assets.website-files.com/65f04bf2f0d160710116eda6/65f93fc7ace7cccc856fe6b3_14235902206.pdf&id=453In PDF document text
    • https://www.vbweb.com.br/links_redir.asp?CodigoLink=474&Link=https://uploads-ssl.webflow.com/65f049d9ee5a61e6f72e5874/65f94169e63a560a7772ec7a_4046887556.pdfIn PDF document text
    • https://www.secure-res.com/rdx.asp?goto=https://assets.website-files.com/65f0294d89ced807ef148a21/65f94fa734b65ed91071ed3e_dixazik.pdf&orig=varu&utmutm_source=visitaruba.com&utm_medium=referralIn PDF document text
    • https://solefundamentals.com/goto/https://uploads-ssl.webflow.com/65dca209513e17b003dfcc9e/65f93d499f7c2b4ccd75818b_liveworugu.pdfIn PDF document text
    • https://hq-porntube.com/xxx.php?link=video-bookmark&skip_sell=true&url=https://uploads-ssl.webflow.com/65dc9442df9620d17771d219/65f948954240a5c29230e30c_71076326822.pdfIn PDF document text
    • http://newsrankey.com/view.html?url=https://assets.website-files.com/65eff8d1becfc5bb071f845f/65f9508bc85152dc843b5bad_jatudegebofodozomunivi.pdfIn PDF document text
    • https://guiadosmelhoresprodutos.com.br/shp/?url=https://assets.website-files.com/65f0410c53417836ae233515/65f93e2015a0df5cdbd021b9_vinixogo.pdfIn PDF document text
    • https://hqhotporn.com/xxx.php?link=video&p=100&u=https://assets.website-files.com/65f01a0fd4353045feae4471/65f94f0e485ced798c2ad890_72967593900.pdfIn PDF document text
    • http://feature.goo.ne.jp/redirect/brandear/d_ng/https://5.imimg.com/data5/SELLER/Doc/2024/3/401992187/DI/NR/VX/216997398/47481860673.pdfIn PDF document text
    • http://www.altaimap.ru/redir.php?site=https://assets.website-files.com/65f014f45c42722f18b302a7/65f943974c46545a05c82759_74107625418.pdfIn PDF document text
    • http://www.upstartblogger.com/BlogDetails?bId=5538&Url=https://5.imimg.com/data5/SELLER/Doc/2024/3/402051496/CW/SU/XA/216996623/b3f83e19-ce41-41d9-8fb6-bc7f07d33d00.pdf&c=1In PDF document text
    • https://www.chinaath.com/addons/cms/go/index.html?url=https://5.imimg.com/data5/SELLER/Doc/2024/3/402051396/PI/NV/AW/216996536/86428428-9eca-4627-aca6-b54ca510dfd6.pdfIn PDF document text
    • https://wadabafurixevig.colod.co.za/5483432889972355302710528?netorejipopozuwokasofakafipobokogezimokuzozenajemagikejepirosotedujajulafukisekusikutowimawop=zokamizekodamisezexujefujuzipusapiwaxotubijebikudizafoponuzabazikopexuzorovigabopelaxomenoxolovoxepojenelidajaxafedimovexupagimazitidajifefixabuvefezenoxanufenawowutubaxafukowevowanisipaverupogevexavisolizaba&keyword=parts+of+a+leaf+worksheet&kikugosemafajetuxurejedikilewobadefuwonavaruziraputefitepinewezu=mimoderigakepusofakusetudelaripomipobadinewikizibixadotokalobeluzedemerajevatusupovixerezinoripafojelufigujivusuwevavonoxugIn PDF document text
    • https://wadabafurixevig.colod.co.za/5483432889972355302710528?netorejipopozuwokasofakafipobokogezimokuzozenajemagikejepirosotedujajulafukisekusikutowimawop=zokamizekodamisezexujefujuzipusapiwaxotubijebikudizafoponuzabazikopexuzorovigabopelaxomenoxolovoxepojenelidajaxafedimovexupagimazitidajifefixabuPDF link annotation
    • https://wadabafurixevig.colod.co.za/5483432889972355302710528?netorejipopozuwokasofakafipobokogezimokuzozenajemagikejepirosotedujajulafukisekusikutowimawop=zokamizekodamisezexujefujuzipusapiwaxotubijebikudizafoponuzabazikopexuzorovigabopelaxomenoxolovoxepojenelidajaxafedimovexupagimazitidajifefixabuvefezenoxanufenawowutubaxafukowevowanisipaverupogevexavisolizaba&keyword=parts+of+a+leaf+worksheet&kikugosemafajetuxurejedikilewobadefuwonavaruziraputefitepinewezu=mimoderigakepusofakusetudelaripomipoPDF link annotation
    • http://southernillinoiseclipse.com.php56-31.ord1-1.websitetestlink.com/redirect.php?r=https://5.imimg.com/data5/SELLER/Doc/2024/3/402024362/FL/VD/DN/216997299/67730881930.pdf&id=70&t=activity&ip=66.249.75.29&m=1In PDF document text
    • https://r.bttn.io/?btn_ref=org-4250020ab4443b4b&btn_reach_pub=1011l245831&btn_reach_pub_name=staytopia-v-hp&btn_mobile_url=https://haphinit.online/wp-content/uploads/2024/01/bibugatajupukunun.pdf&btn_network_ref=&btn_url=https://haphinit.online/wp-content/uploads/2024/01/bibugatajupukunun.pdf&original_destination=https://haphinit.online/wp-content/uploads/2024/01/bibugatajupukunun.pdfIn PDF document text
    • http://0448.free.fr/bonjour/plugins/liens/clic.php?url=https://5.imimg.com/data5/SELLER/Doc/2024/3/401993776/VZ/CK/ME/216996694/xifipedukof.pdfIn PDF document text
    • https://shop.mts.by/bitrix/redirect.php?goto=https://assets.website-files.com/65f00789e1bfcfdbe6cdd7c5/65f9518d673d45286adbc6f7_bimesa.pdfIn 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_off000a36c1.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000a36c1.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000a36c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA36C1 12232 bytes
SHA-256: 0167beaac1402857884431a3832949a05bb8a2cc2749952113e63bcffed47c69
font_01_sfnt_off000a5400.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA5400 15692 bytes
SHA-256: 64d67fb5f81a2acaef042c8b98fbf9f538297b73a44a3a87b09013fac1fad589