Malicious PDF — malware analysis report

Static analysis result for SHA-256 09e2df9fbe312afe…

MALICIOUS

PDF

45.6 KB Created: 2021-09-14 09:10:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: df9a39cd312e1a66704df8cacddb7467 SHA-1: 9f0938e6ee2cbacf6d4d42517d9cec4db5197307 SHA-256: 09e2df9fbe312afe12f3ad63ac714b7784f6dfb3d90421ae30310d207d708d3d
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF contains embedded JavaScript, which is often used to redirect users to malicious websites or download further payloads. The document body is heavily obfuscated, but the heuristics indicate a link farm pointing to compromised WordPress uploads and disposable hosting, suggesting an attempt to distribute malware or phish for credentials. The embedded JavaScript likely facilitates the redirection to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7407

Heuristics 5

  • 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 http://amsaneeraus.fi/userfiles/files/14259130044.pdf In PDF document text
    • http://associatedreclaimed.com/userfiles/files/78775916961.pdfIn PDF document text
    • https://propiedades.net/ckfinder/userfiles/files/49423760940.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2021090720594068.pdfIn PDF document text
    • http://sanga.asia/userData/board/file/towusamobupewugige.pdfIn PDF document text
    • https://laps.pl/userfiles/file/gesotote.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e4820a2a6e---8511000938.pdfIn PDF document text
    • http://djpress.pl/Image/files/zizilexotukekutemisiron.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/dadc020ac908e0b41ceee1919c682d63/difokeseku.pdfIn PDF document text
    • https://beaumont-residence.com/wp-content/plugins/super-forms/uploads/php/files/qfuimok4kolthnfi089a1e0st6/54511947554.pdfIn PDF document text
    • https://chungangroup.com/uploads/files/202109011252047662.pdfIn PDF document text
    • https://nulifeus.com/~nulife/userfiles/file/56756763922.pdfIn PDF document text
    • https://ratosatu.com/contents/files/dagafitavonerukasiw.pdfIn PDF document text
    • https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133c698ec7e0---49182050422.pdfIn PDF document text
    • https://eyescare.vn/app/webroot/upload/ckfinder/files/mukipabuzukelazewen.pdfIn PDF document text
    • http://lotusromeo.fr/app/webroot/files/userfiles/files/tanipakiwuludapofimadafu.pdfIn PDF document text
    • https://autoskola-scp.com/files/wijorujikubozediveg.pdfIn PDF document text
    • http://polishingmarblefloor.it/userfiles/files/debuzoxopo.pdfIn PDF document text
    • http://carscaso.com/js/upload/files/pirajefoxasugejexuz.pdfIn PDF document text
    • http://disonde.com/filespath/files/20210912040158.pdfIn PDF document text
    • http://erago.cidees.com/uploads/files/xurazevo.pdfIn PDF document text
    • https://aiaciran.org/cache/fck_files/file/vawakotafilefopibafotiwa.pdfIn PDF document text
    • http://showpalmedical.com/userfiles/67599897078.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=phonetics+and+phonology+notes+pdfPDF link annotation

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