Malicious PDF — malware analysis report

Static analysis result for SHA-256 e507f32b5e8446c5…

MALICIOUS

PDF

415.6 KB Created: 2021-09-07 17:34:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 35f2df06cf99200c0bd87a5abb4b6102 SHA-1: 8a8559a6ea8e5c65e9ade69e930e26368284c83f SHA-256: e507f32b5e8446c518e5ecb8931f2719a7bd0b07915d09a96348b734dee2ba2f
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojanized PDF. Several URLs point to compromised WordPress sites, suggesting a distribution method where malicious files are hosted on seemingly legitimate but compromised infrastructure. The presence of embedded URLs and the PDF structure itself are indicative of a phishing lure, likely attempting to trick users into downloading further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8018

Heuristics 4

  • 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.
  • 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 http://avtoarka.ru/wp-content/plugins/super-forms/uploads/php/files/9b2a413ff5eda193aca717842d502cad/66684749877.pdf In PDF document text
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/ntasku0g963dd0h5kecqj0pl7j/11427819586.pdfIn PDF document text
    • http://thankschicken.com/uploads/files/75664367505.pdfIn PDF document text
    • http://antasboru.com/guvennet/resimlerfiles/mowatisiroxevepizopekem.pdfIn PDF document text
    • https://biodent.ro/m4fm_files/m4news/ck-uploads-files/79288218736.pdfIn PDF document text
    • http://garant-fond.ru/ckeditor/ckfinder/userfiles/Images/files/14973741463.pdfIn PDF document text
    • https://gulf-rope.com/images/bulk_images/files/zavigaboxum.pdfIn PDF document text
    • http://divorce-difficile.fr/userfiles/file/13560627883.pdfIn PDF document text
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/9ipul082md1fiebjohtchq5264/judavuj.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/50171087189.pdfIn PDF document text
    • http://karpatskiles.ru/store/file/57090886526.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c417ffcba66---jusajaretoki.pdfIn PDF document text
    • http://akinmedikal.com/uploads/file/82850564625.pdfIn PDF document text
    • https://jamisonfurnace.ca/userfiles/files/97327478392.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/6s3nv9ciumseg3eqs39all31c2/pifivurisa.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/thfudfq5378oep8rb0ili345l0/81002473603.pdfIn PDF document text
    • https://quimicasorocolor.com.ve/ckfinder/userfiles/files/bolajoj.pdfIn PDF document text
    • http://quadocdao.vn/uploads/files/99226598279.pdfIn PDF document text
    • http://laweasy.kr/userfiles/file/36489164364.pdfIn PDF document text
    • http://richwoods1969.com/clients/861079/File/soxetijezafikofe.pdfIn PDF document text
    • https://dukra.sk/editor_uploads/files/rakexesol.pdfIn PDF document text
    • https://mytalk7.com/_UploadFile/Images/file/558337443.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=aviation+maintenance+management+book+pdfPDF link annotation

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