Malicious PDF — malware analysis report

Static analysis result for SHA-256 501febed8d7631bc…

MALICIOUS

PDF

65.7 KB Created: 2021-09-06 01:57:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: eb24e8ec91f7b2165661a22d4bbdfe17 SHA-1: 931a21ffd5d4fbf835032cb38a53785c8fdbfc2c SHA-256: 501febed8d7631bc1bc1dfd793a4ab109bbd33d0bf15d15d0932b27b9017a2ad
64 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link farm with numerous URLs pointing to other PDF files, many hosted on compromised CMS uploads. This suggests a tactic to distribute content or potentially malicious files across multiple domains. The presence of 'utm_term' parameters in some URLs indicates a potential SEO manipulation or tracking purpose.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3659

Heuristics 4

  • 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 http://kagoshimakojintaxi.com/userfiles/file/69936187339.pdf In PDF document text
    • http://live-lessons.net/lcj/web/uploads/assets/file/88780811302.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b1d00346f83---suvinuzi.pdfIn PDF document text
    • http://beiks.info/public/file/16996867716.pdfIn PDF document text
    • http://imaginove.eu/data/Files/98976530288.pdfIn PDF document text
    • http://studiocalderini.it/userfiles/files/24576123880.pdfIn PDF document text
    • https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/0f67687fa52afecf98803d2c5f784e53/kabemegodaxoxep.pdfIn PDF document text
    • https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8c2d49c343---kamutulugogopij.pdfIn PDF document text
    • http://diversecityuk.com/userfiles/file/541206662.pdfIn PDF document text
    • http://michellesmithscott.com/clients/36670/File/98036699688.pdfIn PDF document text
    • http://singer-island-condos.com/userfiles/files/migugoburekab.pdfIn PDF document text
    • http://xn----8sbnbd9chja.xn--p1ai/userfiles/file/vavekuvuxivomadubemakebi.pdfIn PDF document text
    • http://obras.ru/sites/default/files/uploads/fatiminusaduvaje.pdfIn PDF document text
    • http://forter.vn/hinhanh/file/wozozesofe.pdfIn PDF document text
    • https://stef-nancy.fr/upload/document/mivujopidotubanozev.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079f9f1ae555---7966847648.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7b1408163---19956966560.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/1bb3d65a12d2badb65dbcc8d4439f2d9/96195812933.pdfIn PDF document text
    • http://www.gonouvellezelande.com/files/jelalizuwakojiguxebat.pdfIn PDF document text
    • http://shipagents.nl/uploadfiles/file/69788936460.pdfIn PDF document text
    • https://pierrelemagicien.com/userfiles/file/45211438762.pdfIn PDF document text
    • http://bassbasement.org/userfiles/file/roboguto.pdfIn PDF document text
    • http://aktien-analyse.de/images/File/39157850481.pdfIn PDF document text
    • http://logo4you.dk/userfiles/file/lekenawosebuga.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=wayne+dyer+power+of+intention+pdfPDF link annotation

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