Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfa4806e3e053f34…

MALICIOUS

PDF

57.5 KB Created: 2021-06-13 02:34:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 0cf5bcdbb58f6d2af25031b1d450d46e SHA-1: 642a642d831e7bb59844dfd1366262cda4481a4b SHA-256: bfa4806e3e053f34a1d6e5b83b0b68834d06fecabee4be1e51456f52fd977924
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and ML classifiers. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution attempt. The embedded URLs, such as 'https://nomylo.ru/uplcv?utm_term=virtual+8+pro+download', likely serve as lures to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8168

Heuristics 5

  • 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 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://nomylo.ru/uplcv?utm_term=virtual+8+pro+download PDF link annotation
    • https://www.kngroup.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd41b7bd6c3---zixetisa.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608dd0e518e1d---vubugelekewulogud.pdfIn PDF document text
    • https://pergamine.com/ckfinder/userfiles/files/23433112556.pdfIn PDF document text
    • https://www.azembay.com/wp-content/plugins/super-forms/uploads/php/files/6v7l7js462ahkv55u0hhds3c75/biguzawatonemufigim.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/60675719058b0beeff84a52b89dfe694/4471813021.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b27a9f1fc76---3656067865.pdfIn PDF document text
    • https://ecoinkworld.com/wp-content/plugins/super-forms/uploads/php/files/58360ccb4c34da7bb25d29846ee8f3ce/62617549907.pdfIn PDF document text
    • https://pluckywize.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef3a19672a---savosixapotavipuxitefemu.pdfIn PDF document text
    • http://aire-limpio.com/img/editor/file/piregunojoworejew.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a43dd31cbe3---ninuval.pdfIn PDF document text
    • http://antik-cafe-bergen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16087d93789d31---48031137623.pdfIn PDF document text
    • https://advancedcheckcashadvance.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a41ac39a2cb---rugazomafir.pdfIn PDF document text
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/97ae31adf984d66180b60ff34e149c9b/bujudatoramodoxiworaso.pdfIn PDF document text
    • http://manufim.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16072b0455719f---mibedozanefop.pdfIn PDF document text
    • http://breakevenpoint.pl/uploads/editor/file/90330673983.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/n0284mh02oj73f40i193snajke/zibaruniwesinid.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079fdcd37c0a---tupurakaponewidewakuxevat.pdfIn PDF document text

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