Malicious PDF — malware analysis report

Static analysis result for SHA-256 d75dd59554e3f395…

MALICIOUS

PDF

59.5 KB Created: 2021-09-19 12:57:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 33e79d89ec6c2f9942ffee340c8752fa SHA-1: bf791f63ce002591dc5ba1be2041af8114f527ed SHA-256: d75dd59554e3f395b3fd40b17bef7ad09874315a8b87ded389e0b35f3df56c39
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. The ClamAV detection and ML classifier indicate malicious intent, likely to lure users to phishing or malware-hosting sites. The presence of link farm heuristics further supports this, suggesting the PDF's primary purpose is to redirect users to external, potentially malicious, content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

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://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613629e2987dd---jegafuvenezamoma.pdf In PDF document text
    • http://prime42.ru/userfiles/files/82197829818.pdfIn PDF document text
    • http://opuspointpartners.com/ckfinder/userfiles/files/xufexitenizolakubusaki.pdfIn PDF document text
    • https://webshopplus.nl/app/webroot/files/userfiles/files/66878688040.pdfIn PDF document text
    • http://webursitet.org/Files/file/pedesutunatarufazirom.pdfIn PDF document text
    • http://dolinakrzeptowa.pl/public/upload/ckfinder/userfiles/files/75623886462.pdfIn PDF document text
    • http://mya1fc.com/files/ckuploads/files/61354358298.pdfIn PDF document text
    • http://dworbieland.pl/userfiles/file/3200981152.pdfIn PDF document text
    • https://wsbtitan.com/images/file/67970983715.pdfIn PDF document text
    • http://melly-incendie.fr/img_db/21145842152.pdfIn PDF document text
    • http://austral-immo.com/userfiles/files/92707225310.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/91241748391.pdfIn PDF document text
    • http://iweldbot.com/ckfinder/pho/files/74806076118.pdfIn PDF document text
    • http://mtsp.by/userfiles/files/wifinakosu.pdfIn PDF document text
    • https://bulendengin.com/upload/ckfinder/files/naxegexavukonajo.pdfIn PDF document text
    • https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/508eeb1da2ea5e6464f9316d503f5261/sawapipedipimaxono.pdfIn PDF document text
    • https://sim2007.com/files/18979896135.pdfIn PDF document text
    • http://oppedisanorobertosrl.com/userfiles/files/83535103986.pdfIn PDF document text
    • https://artistaone.co/userfiles/files/6651052554.pdfIn PDF document text
    • http://aatmicscience.org/asuserfiles/file/14575396314.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b84453ef84---kadetodifeb.pdfIn PDF document text
    • http://quangcaosmsgiare.com/media/ftp/file/87381623453.pdfIn PDF document text
    • http://clubselectionvoyages.net/images/file/22253776832.pdfIn PDF document text
    • https://observatoire-omic.org/documents/file/misobawir.pdfIn PDF document text
    • https://livbiopharma.com/userfiles/file/jobuxijovu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=100+likes+on+instagram+free+trialPDF link annotation

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