Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d5b89ac93df2b8a…

MALICIOUS

PDF

78.1 KB Created: 2021-09-13 09:14:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: f4596c1d354668d6f447099fdd145c34 SHA-1: 4a837548b29e9e94293d7fa01e4e3d3295d5886a SHA-256: 7d5b89ac93df2b8a0069b36f56db8de21cf911d358025b3f57a080d580b23c92
172 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and numerous links, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a phishing or malware distribution attempt. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment. The embedded JavaScript likely facilitates the redirection to malicious URLs.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4132

Heuristics 7

  • 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.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/16139fd4411fc1---15557586533.pdf In PDF document text
    • https://binarbaidequipment.com/public_html/userfiles/file/walopoxoxafuxobit.pdfIn PDF document text
    • https://dananeye.com/uploads/files/202109130131433671.pdfIn PDF document text
    • http://maremio.ru/admin/ckfinder/userfiles/files/mixexisalo.pdfIn PDF document text
    • http://cosmosimpex.com/app/webroot/ckfinder/userfiles/files/9067158096.pdfIn PDF document text
    • http://realcomfort.ru/content/upload/file/tarupawofazuzezexaluvari.pdfIn PDF document text
    • https://kurtoglumob.com/upload/file/8602103572.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/161334b72133a3---385910149.pdfIn PDF document text
    • http://www.ville-civaux.fr/admin/js/ckfinder/userfiles/files/sagedalasarefevifepat.pdfIn PDF document text
    • https://zapcdn.space/web/img/podborky/files/zixejaseroji.pdfIn PDF document text
    • https://przyklejki.pl/userfiles/65404866033.pdfIn PDF document text
    • http://www.leposeur.fr/site/upload/ckfinder/files/sefuja.pdfIn PDF document text
    • https://polinagerz.ru/wp-content/plugins/super-forms/uploads/php/files/6et5vesuqqd5r20nf26tptsffh/4291114557.pdfIn PDF document text
    • https://leise.ru/admin/ckfinder/userfiles/files/romisigobipe.pdfIn PDF document text
    • https://www.hs-hofgastein.salzburg.at/ckfinder/userfiles/files/reruritili.pdfIn PDF document text
    • https://www.nvsrolko.org/ckfinder/userfiles/files/884516708.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16135c56dd6887---lefabosixuloromak.pdfIn PDF document text
    • http://studiomedicoveterinariobellucci.eu/userfiles/files/gosedat.pdfIn PDF document text
    • https://tonerihned.cz/userfiles/file/sozewef.pdfIn PDF document text
    • http://kyochonbuenapark.iorderfoods.com/uploads/files/931676194.pdfIn PDF document text
    • https://rebates.forex/wp-content/plugins/super-forms/uploads/php/files/c88jc8hfasaovvj2s3ktccupe7/78382844494.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/ldghhfmmq47asi380ia23ak3tt/nuwusox.pdfIn PDF document text
    • http://gartenmessebau.de/uploads/files/95255509400.pdfIn PDF document text
    • http://sushikyototogo.com/uploads/files/pomudok.pdfIn PDF document text
    • http://brixtontaxi.com/survey/userfiles/files/gowelalitu.pdfIn PDF document text
    • http://iberia-ex.com/images/blog/file/xeravugevadoxugalape.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=sword+art+online+alicization+war+of+underworld+part+2+episode+8PDF link annotation

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