Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ff15e415271de22…

MALICIOUS

PDF

59.5 KB Created: 2021-09-01 20:51:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: e5e22a7c2c5dff336a1e0ed7c40c756f SHA-1: 0d905dec336912ccc039a9e22618cf1811d8d57e SHA-256: 5ff15e415271de22cfadabdbdd96475d076ca281b3a2da874c17d24ba8faf397
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' and the ML classifier output strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9740

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://shannonlakeestates.org/fck_images/file/41695927697.pdf In PDF document text
    • https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/8890e251a6550deda9cadd6c7675b6e2/76865932888.pdfIn PDF document text
    • http://oikoscoccatoarchitettura.com/userfiles/files/sosozaxadasofujo.pdfIn PDF document text
    • https://hartwellcook.com/wp-content/plugins/super-forms/uploads/php/files/3bf299e7b7f0df9741e1a50cea455b45/lebitebenuxete.pdfIn PDF document text
    • http://bizbecho.com/pa/trainstation/uploads/image/file/6152766353.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c24f8c31b37---ladegebomojuvumu.pdfIn PDF document text
    • https://warungmimpishio.com/contents//files/kepogim.pdfIn PDF document text
    • http://www.yoko-ono.be/images/userfiles/file/19431226316.pdfIn PDF document text
    • http://recamonde.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160fa8b205392e---jofizadupudesaf.pdfIn PDF document text
    • http://closehorses.com/userfiles/file/98082597997.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607901a7ec01d---terekopojobikokobugu.pdfIn PDF document text
    • http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/5c226a6b24da00d320e5889e63e2741a/48607842281.pdfIn PDF document text
    • http://sahrugs.com/userfiles/file/20256071103.pdfIn PDF document text
    • http://pogologistics.com/ckfinder/userfiles/files/wakixapowixikepiteta.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/c9ed3bcf7c138545762e87d57b87619c/38329089262.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/d42fad76f3e3feea7314d90dc20dc2fa/judabilonavibo.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/8e6469785b500b12417cc57a6e667d90/kufefavobilunisosunenasop.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099c80ba9343---99418374493.pdfIn PDF document text
    • http://codienlanhminhquang.com/upload/files/jofobuto.pdfIn PDF document text
    • http://charivne.info/images/file/rugafupafidu.pdfIn PDF document text
    • https://asi-filter.pl/files/file/nexuwoxotoja.pdfIn PDF document text
    • https://soalmatematik.com/userfiles/file/tojewazedazojazedoxeme.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=call+of+duty+black+ops+pc+torrent+downloadPDF link annotation

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