Malicious PDF / .VIR — malware analysis report

Static analysis result for SHA-256 5608a22ebc0c02c6…

MALICIOUS

PDF / .VIR

456.7 KB Created: 2024-02-02 09:27:48 Authoring application: PDF Studio First seen: 2024-07-06
MD5: 00d0c2c7637cf58cb28aa2dbda44e85b SHA-1: acca3d833afc2cda6d7cba3f877b35a5ac87fb67 SHA-256: 5608a22ebc0c02c6821a9061430358746b4161015a83d270511a21314c07d168
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a high-risk heuristic firing for a random URL link, which redirects to a suspicious domain. This indicates the document is likely a lure to a phishing site or a malware download page. The ML classifier and ClamAV detection further support the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8117

Heuristics 6

  • 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.
  • 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://nakleykiavto.ru/bitrix/click.php?goto=https://5.imimg.com/data5/SELLER/Doc/2024/5/415190292/HF/VG/KO/221250778/61435121980.pdf In PDF document text
    • http://serverevolution.com/https://redrockbicycle.com/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://bagitelujugiri.gfxtoolkit.com/f/846546473In PDF document text
    • https://ii.eek.jp/rnk.cgi?mode=link&id=139&url=https://www.colin.edu/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://bitopexobewo.sentineltr.com/f/86196966In PDF document text
    • http://www.centrogdl.com/empresas_destacadas_redireccion.php?id_empresa=120&web=https://5.imimg.com/data5/SELLER/Doc/2024/5/415191742/YP/HA/JB/221250854/be3cdc03-4b2b-4ecc-8903-a5e24d0eb799.pdfIn PDF document text
    • https://websoft70.ru/bitrix/rk.php?id=17&site_id=s1&event1=banner&event2=click&goto=https://portal3.samford.edu/html/js/editor/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://juzebegofij.thiranmanamalai.com/f/63810287In PDF document text
    • https://www.retirementhomes.com/link_click_count?url=https://uploads-ssl.webflow.com/65f029c688da524c51607c13/6632ff5d4e3c83ef4c1cd939_xozivivazazad.pdf&utm_medium=banner&utm_campaign=GoldListing&nid=225557In PDF document text
    • http://www.arcadiaclub.com/articoli/service/redirect.aspx?r=https://uploads-ssl.webflow.com/66001df3ceef86766588e1f6/6632f6b5c9e737b98d029894_44691580125.pdfIn PDF document text
    • https://www.oldporn.net/xxx.php?link=video-bookmark&skip_sell=true&url=https://assets.website-files.com/65dcb5427a20a6808bb2a85c/6632fe4b893811fc5051a62b_zavasekipokosumagilo.pdfIn PDF document text
    • https://karpet24.nl/https://goingaaa.com/includes/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://lodiwi.ibcphoenix.com/f/601011871In PDF document text
    • https://chemicalsourcingguide.com/refer.php?URL=https://patient67.com/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://guzaxotekabi.skyangelus.com/f/225769588&idComp=210In PDF document text
    • https://culture29.ru/bitrix/redirect.php?goto=https://uploads-ssl.webflow.com/660040babc476042ed11b3d2/6632ff92eaf04fbe18d54ff5_41462800512.pdfIn PDF document text
    • http://fermereve.ru/bitrix/redirect.php?goto=https://uploads-ssl.webflow.com/65dcac8281279997e94ef84d/66330435679e0b329d0fbe9d_geremelo.pdfIn PDF document text
    • https://blogdelagua.com/adserver/www/delivery/ck.php?ct=1&oaparams=2__bannerid=35__zoneid=8__cb=1de6797466__oadest=https://housination.com/manage/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://pazusolif.club-directory.com/f/73325In PDF document text
    • https://japepedafopoje.tevav.co.za/79199118501385005154687588?delolisoketazufebunakutimobikamizaxamoxodulozefuvof=xerebolokixodumozebukiwuliwirusukovirosasozapimabubejotufoxipelideripasubefemiwakubalatibiramunitesusalijidimogewutimerilufenupegomepamijosigazenafojuxofojagesefosexoleturibarabazokobatizuginesitudurezobirek&utm_kwd=twin+linked+10th+edition&roboburamuritupesakixepuloxipadojuzonelefowazudokomosokagazixovesujemaxipikuxazisixad=kixorikirogabawisogibanetawofutisedevikudisatikojusarabetijajozimofotalupatibawaxaninuzirotagepitirawowoxabizawoniwIn PDF document text
    • http://yynavi.wjg.jp/?cn1-1&site=48993&url=https://assets.website-files.com/65f0437ca08d9bced4142dc0/6632fb0c2c97d3b6f13e5203_84857601551.pdfIn PDF document text
    • http://www.cheapdealuk.co.uk/go.php?url=https://www.colin.edu/cfide/scripts/ajax/fckeditor/editor/filemanager/browser/default/browser.html?Connector=https://xakosudurox.mytickethomeband.com/f/869514474In PDF document text
    • https://japepedafopoje.tevav.co.za/79199118501385005154687588?delolisoketazufebunakutimobikamizaxamoxodulozefuvof=xerebolokixodumozebukiwuliwirusukovirosasozapimabubejotufoxipelideripasubefemiwakubalatibiramunitesusalijidimogewutimerilufenupegomepamijosigazenafojuxofojagesefosexoleturibarabazokobatiPDF link annotation
    • https://japepedafopoje.tevav.co.za/79199118501385005154687588?delolisoketazufebunakutimobikamizaxamoxodulozefuvof=xerebolokixodumozebukiwuliwirusukovirosasozapimabubejotufoxipelideripasubefemiwakubalatibiramunitesusalijidimogewutimerilufenupegomepamijosigazenafojuxofojagesefosexoleturibarabazokobatizuginesitudurezobirek&utm_kwd=twin+linked+10th+edition&roboburamuritupesakixepuloxipadojuzonelefowazudokomosokagazixovesujemaxipikuxazisixad=kixorikirogabawisogibanetawofutisedevikudisatikojusarabetijPDF link annotation
    • http://delovoy.spb.ru/go/url=https://assets.website-files.com/65dc95204f3f9a9fbdf4eda0/6632fcf86309b0a7504c32eb_25049164829.pdfIn PDF document text
    • http://www.mindfreak.free.fr/audio-streaming/go.php?url=https://uploads-ssl.webflow.com/65dc95204f3f9a9fbdf4eda0/6632f88a69d9f2aaab6fab8a_76094449992.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_off0006c903.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0006c903.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0006c903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C903 17008 bytes
SHA-256: 623976e6e941cb1c5d8a3539a8a2aa3d6b1733d20a023b8bbc99418589511511
font_01_sfnt_off0006f567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F567 12040 bytes
SHA-256: 1c3d4ae8bc2751538209babde3ed3e6b7cd4c2188cdb1779aee91551758dfdd2