Malicious PDF — malware analysis report

Static analysis result for SHA-256 ceb7619d1a51993a…

MALICIOUS

PDF

47.5 KB Created: 2021-06-16 03:46:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e22be8a9ea5930e0eb81d175aae21793 SHA-1: 3c724064fa24947b3429d69d389bd95e830b4890 SHA-256: ceb7619d1a51993a07a6a1e866f00ec4ecfbc76643d595ef968cc7871267161a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. It contains numerous links pointing to compromised WordPress sites, likely serving as a link farm to redirect users to malicious content. The presence of external URIs and the overall structure suggest an attempt to exploit user trust through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7930

Heuristics 5

  • 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.
  • 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://medvor.ru/uplcv?utm_term=finding+gradient+formula PDF link annotation
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092f81572bcf---95439154803.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160836d99763a3---29332551910.pdfIn PDF document text
    • http://daiichibus.vn/uploads/news_file/12627831062.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/683e3f2e5e1244c84a764abbbbdb80a0/44506938676.pdfIn PDF document text
    • http://vantaibactrungnam.vn/upload/files/86769066721.pdfIn PDF document text
    • https://www.penyembuhanholistikreiki.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acc887e47fc---vijus.pdfIn PDF document text
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/423nshg5f1smgt3rdt1o1ov1ek/95273068027.pdfIn PDF document text
    • https://warungmimpishio.com/contents//files/46397467057.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/0d92d112ffafee856894c31a4967bc7d/67227680768.pdfIn PDF document text
    • http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160c8817e4824c---31475405058.pdfIn PDF document text
    • https://rosemonttherapy.health/wp-content/plugins/super-forms/uploads/php/files/en0bljppf4n3frdfdhdhk35c3c/54927058274.pdfIn PDF document text
    • http://paintingservicesonline.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16085c42b045c7---pojorasilawejitomibe.pdfIn PDF document text
    • https://asset-books.com/userfiles/file/nebofevigorutede.pdfIn PDF document text
    • https://www.corridar.com/wp-content/plugins/super-forms/uploads/php/files/n98hm8cq9pp8ocdkvjarr588bj/37155204247.pdfIn PDF document text
    • https://anpheatingandac.com/nbloom/fckuploads/file/32320676456.pdfIn PDF document text
    • https://fallsplat.se/file/lirodobonenukelip.pdfIn PDF document text
    • http://edwardfmcgintypa.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/basunodilujenuruwuxozetep.pdfIn PDF document text
    • https://olgapopovaphoto.com/wp-content/plugins/super-forms/uploads/php/files/e86a7eaee0d4de237d972e252c908045/69365764905.pdfIn PDF document text
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/8a73e532c78735d2c501de065ea5d987/93224206938.pdfIn PDF document text

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