Malicious PDF — malware analysis report

Static analysis result for SHA-256 8946d1a6df3310c0…

MALICIOUS

PDF

80.0 KB Created: 2021-09-06 07:23:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: ab9c3e2de81fbe0042133010e542d735 SHA-1: 1137b1e880f539f2c914b768de26f66462b47ded SHA-256: 8946d1a6df3310c03df5289105321818cbab1cfe620f9f92f13fade95cdbf519
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites and disposable hosting domains, indicating a link farm designed to redirect users. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification further support its malicious nature, likely serving as a lure for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8043

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 http://thefutureofgolf.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160709caeba37b---40471880636.pdf In PDF document text
    • http://xenangheli.vn/public/files/97273035424.pdfIn PDF document text
    • https://seataclighting.com/wp-content/plugins/super-forms/uploads/php/files/1ae483c84202fe76c404bbcf24bf57f5/zejuvumek.pdfIn PDF document text
    • http://hotelgiottotorino.com/userfiles/files/97553023880.pdfIn PDF document text
    • http://ucity68.com/clients/e/ea/ea220da86df44fb0ae3b7c8e8295ccc1/File/54244413105.pdfIn PDF document text
    • http://carszana.com/image/upload/File/13022207129.pdfIn PDF document text
    • http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/160760ce86629c---73652586814.pdfIn PDF document text
    • http://asfalon.com/__files/file/xowilinivujopefebijenuf.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/d69676abca3820f04b1dd41058202929/xobefarotirisivudojigat.pdfIn PDF document text
    • http://vietsonplastic.com/uploads/userfiles/file/gikukedilose.pdfIn PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/sjcgf657spt416df44oblqnu1t/lesaradaku.pdfIn PDF document text
    • http://fourfoods.com/images/files/kedenuwog.pdfIn PDF document text
    • https://sogelec-eng.com/files/ckfinder/files/68406376896.pdfIn PDF document text
    • https://excore.hu/ckfinder/userfiles/files/93975670258.pdfIn PDF document text
    • https://lynnesnaturaltreats.com.au/wp-content/plugins/super-forms/uploads/php/files/68b381ed24dd26ed6120a186a41d2cc6/34130643141.pdfIn PDF document text
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/d3uot4ekl3rtp5fpb534jei5n8/kitukumasurepifum.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ed973e31a4b---xorojunemumikeropanuw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=gray+to+bcd+code+converter+pdfPDF link annotation

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