Malicious PDF — malware analysis report

Static analysis result for SHA-256 6eb30ba3cd5be02a…

MALICIOUS

PDF

70.7 KB Created: 2021-09-20 13:21:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: dfe5c84645604382050401a569095b55 SHA-1: 32f4c194052ffeae6dd1bc6c14a78b5146a65e8b SHA-256: 6eb30ba3cd5be02a4ba2d4568c45c68752b9f1178875f712acff259847aa14a7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file functions as a link farm, containing numerous URLs that redirect to various websites. Several of these URLs point to compromised CMS uploads, suggesting an attempt to host malicious content on seemingly legitimate but compromised infrastructure. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6865

Heuristics 5

  • 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 farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1613a04c2beb34---vimituwakojelibarijosebok.pdf In PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/161482efe90670---joxiti.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161321a83ece2e---koxerozeluzajufe.pdfIn PDF document text
    • http://surveycook.com/upload/tmp/202109/file/35615179961.pdfIn PDF document text
    • http://hladonural.ru/upload_picture/mazejagisati.pdfIn PDF document text
    • http://barahi.com/assets/userfiles/files/detofuroliju.pdfIn PDF document text
    • http://csc021.com/userfiles/file/20210912040940_k79gw0.pdfIn PDF document text
    • http://consorzio-csa.it/userfiles/files/31078981488.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1614689258658a---kevituxarixofimi.pdfIn PDF document text
    • https://alquimia.in/admin/fckeditor/editorfile/63329372807.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16142234f4ab2d---jutuzukupimajanojujiz.pdfIn PDF document text
    • https://fiberglasssupplydepot.com/userfiles/files/47711439575.pdfIn PDF document text
    • https://shturnev.com/files/foFKED/file/60943815870.pdfIn PDF document text
    • http://bimore.vn/webroot/img/files/52308231440.pdfIn PDF document text
    • http://style4.allwebeasy.com/userfiles/files/zonizetajunewekufanug.pdfIn PDF document text
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/52625b4884c6eb51e746cd95da4f9abf/2750216843.pdfIn PDF document text
    • http://pscworld.eu/ckfinder/userfiles/files/vekegupekularimujad.pdfIn PDF document text
    • https://vaitinhdien.com/app/webroot/upload/files/77435781772.pdfIn PDF document text
    • https://posh.hr/files/jexuxowoz.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613059229cf15---dugifo.pdfIn PDF document text
    • https://loffoxfitness.mvwebsolution.com/userfiles/files/2982339069.pdfIn PDF document text
    • http://mopi.eu/ckfinder/userfiles/files/zexaxabulodin.pdfIn PDF document text
    • http://refpecsbelvaros.hu/kepek/files/xavojogujijegeparirer.pdfIn PDF document text
    • http://www.kliningstroy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16139c1d5b2b80---nowupewe.pdfIn PDF document text
    • http://www.skk.com.hk/admin/ckfinder/userfiles/files/dawubenurodi.pdfIn PDF document text
    • https://aglogistics-bo.net/userfiles/file/77765827256.pdfIn PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/ec9d95b97f94d63ce3b8797751e31a6d/xabofuripesob.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=game+ppsspp+sword+art+onlinePDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e379.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE379 19640 bytes
SHA-256: 3533c019fe66fe64021467d59aaa7f74bb297b739596a7c427309bcf0b25b8d9