Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cd0eeffd1751c84…

MALICIOUS

PDF

55.4 KB Created: 2021-09-18 22:54:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 085b8a91a5d484f165f12f98fc68a690 SHA-1: 49ee80df6d6c789f7cf0d2250636ccd7672ae551 SHA-256: 4cd0eeffd1751c84442c29a9159a1dcb573f4a88650e6311ae181038eafdc854
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links, many pointing to compromised websites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7719

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://ketchas.ru/uplcv?utm_term=suicide+squad+2+full+movie+watch+online+free PDF link annotation
    • http://kuwaited.com/cote_dor_import/admin/ckfinder/userfiles/files/jojowawixol.pdfIn PDF document text
    • https://pasarantogel.com/contents/files/90738775629.pdfIn PDF document text
    • https://hoffmanowska.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161315f41949b3---73117561233.pdfIn PDF document text
    • http://www.blueoak.fr/image/file/40464791714.pdfIn PDF document text
    • http://zopos.zohukum.com/ckfinder/userfiles/files/82607246641.pdfIn PDF document text
    • https://sanaspinler.net/calisma2/files/uploads/vebisoziril.pdfIn PDF document text
    • http://xahuaheng.cn/userfiles/file/46767478376.pdfIn PDF document text
    • http://f-okinawa.com/img/tmp/file/magibuj.pdfIn PDF document text
    • http://pytextiles.com/userfiles/file/nidakarefume.pdfIn PDF document text
    • https://marblobaths.com/app/webroot/img/files/31109385445.pdfIn PDF document text
    • http://okna-stv.ru/userfiles/files/8048507831.pdfIn PDF document text
    • http://kkagro.com/media/images/upload/file/91103346144.pdfIn PDF document text
    • http://www.evisiontiendaonline.com/ckfinder/userfiles/files/14044182475.pdfIn PDF document text
    • http://bulk-supplies.com/userfiles/file/28999400371.pdfIn PDF document text
    • https://designclarf.it/file/guwezezosurijujunazit.pdfIn PDF document text
    • https://carcable-bg.com/uploads/pictures/files/42799742242.pdfIn PDF document text
    • http://hoteldazegliotorino.com/userfiles/files/52853093019.pdfIn PDF document text
    • http://inewbus.com/wp-content/plugins/super-forms/uploads/php/files/e3416ngjglmu604160pek330d7/70348178714.pdfIn PDF document text
    • http://sahcarpets.com/userfiles/file/lajukutuzuzufo.pdfIn PDF document text
    • http://www.cafeinca.com/img/public/contenido/file/65874532140.pdfIn PDF document text
    • http://shoreluxurylimos.com/userfiles/files/voxitomibivov.pdfIn PDF document text
    • http://dominant.name/userfiles/file/jolaxijo.pdfIn PDF document text
    • https://granitabrasive.ro/editor_up/95008739918.pdfIn PDF document text
    • https://camile.vn/wp-content/plugins/super-forms/uploads/php/files/vc2k1lm0rq0nls5isss64lrtk1/jojubu.pdfIn PDF document text

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