Malicious PDF — malware analysis report

Static analysis result for SHA-256 68a88bd61441bad6…

MALICIOUS

PDF

45.6 KB Created: 2021-07-15 13:10:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 9f6a32b272414eea15ca68773ba37610 SHA-1: a73cb513e3c3b93e4dee00080b8e551d55a58364 SHA-256: 68a88bd61441bad691d52dac9422b8f536fd5e35f40ef69acfab7e923f7e2d05
154 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to compromised WordPress upload directories, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8416

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://crysiq.ru/uplcv?utm_term=zanes+sex+chronicles+series PDF link annotation
    • http://aksaxena.com/bpms/includes/fckeditor_uploads/userfiles/file/76432981076.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d267bb99088---fuvimoguxomutosi.pdfIn PDF document text
    • http://becro-plast.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160a28a16a743f---19669058052.pdfIn PDF document text
    • http://gentlemensquartersbarbershop.com/wp-content/plugins/super-forms/uploads/php/files/08fb15ad4d7f255ede488d5283b2ec68/zubegugepimurowodu.pdfIn PDF document text
    • http://strahovka66.ru/userfiles/file/5853172075.pdfIn PDF document text
    • https://tolgyesvolgy.hu/userfiles/file/foreb.pdfIn PDF document text
    • https://home-consult.lu/userfiles/files/nuvutoke.pdfIn PDF document text
    • https://balaji-technology.com/userfiles/file/76106778035.pdfIn PDF document text
    • http://www.motionmantra.com/userfiles/files/kosolabokivokebon.pdfIn PDF document text
    • http://gekon.net/userfiles/file/95065996180.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/jkl358mic4cfrqr0pu4s62o734/vinaxagotowejosozali.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/c94cb473dcc2238d5fc33c387f89df28/fimomojojuwujawe.pdfIn PDF document text
    • http://hondasushi.com/uploads/files/tixogimososotikefi.pdfIn PDF document text
    • http://bet-balance.com/userfiles/file/wazibawakubikexido.pdfIn PDF document text
    • http://www.jimenez-casquet.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab15bad1faa---84053149518.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160babf44eb71b---gutaba.pdfIn PDF document text
    • https://directorvincentchow.com/fck_filemanager_upload/file/kivujokosuruv.pdfIn PDF document text
    • http://qhzs88.com/admin/fckeditor_upfiles/file/2021061601442680554.pdfIn PDF document text
    • https://b2cexpressdemo.com/userfiles/file/finotozotudoledabaxab.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094c3a3bd31b---63150663164.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160988827c2ea0---49204430705.pdfIn PDF document text
    • https://www.acptechnologies.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b343275c8---dakuberawepafidoloragipiw.pdfIn PDF document text
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16078bd07e983d---teriridupalekene.pdfIn PDF document text

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