Malicious PDF — malware analysis report

Static analysis result for SHA-256 69af104b8443b946…

MALICIOUS

PDF

63.6 KB Created: 2021-09-15 18:28:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 2dd805debf49f3d92b3ed2dcb4036100 SHA-1: 1cac632b10d196f2d9c6b8d6512fcf6561a23909 SHA-256: 69af104b8443b9466390352b396dd062a6d5d00bbc8989614a89a8104ca5611f
154 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to websites hosted on compromised CMS platforms or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6381

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.chablis-gautherin.com/ckfinder/userfiles/files/45410475881.pdf In PDF document text
    • http://phongthuydotho.vn/upload/files/sisolebufow.pdfIn PDF document text
    • http://unsersohn.ch/images/file/18310118994.pdfIn PDF document text
    • http://ccsup.co.th/uploads/ckfinder/files/vivemisatuvufurapugutuwit.pdfIn PDF document text
    • http://big-blue-bus.com/pics/fotos/1/file/27739068031.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a856717f90---67399355076.pdfIn PDF document text
    • https://digireg.ch/upload/60597609288.pdfIn PDF document text
    • http://lawngo.net/fckfiles/93399520840.pdfIn PDF document text
    • https://semot.com/Store/userfiles/file/8353454433.pdfIn PDF document text
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/0c0ce18b3c94d920cf7a151672fcebec/9400271885.pdfIn PDF document text
    • https://littleedupark.com/ckfinder/userfiles/files/11042585588.pdfIn PDF document text
    • http://rideco.hu/upload/file/61632426588.pdfIn PDF document text
    • https://kisikana.hr/UserFiles/files/50526599422.pdfIn PDF document text
    • https://pharma-tools.pl/galeria/file/josonofizipezibeduxokug.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141938b3bcd8---pavuzapo.pdfIn PDF document text
    • http://dakmoto.cz/obrazky/file/25749247274.pdfIn PDF document text
    • http://domoticasociale.it/immaginiNewsletter/file/dewejibutowatepipep.pdfIn PDF document text
    • https://maviet.vn/upload/files/fofizumubifurokotepida.pdfIn PDF document text
    • https://aluvioneschicamocha.sinecsas.com/ckfinder/userfiles/files/witolidubalamogagenevisid.pdfIn PDF document text
    • http://mwbright.com/upload_fck/file/2021-9-9/20210909191835777364.pdfIn PDF document text
    • http://www.jindatunnel.com/up_files/file/97339992930.pdfIn PDF document text
    • http://ksklinika.ru/ckfinder/userfiles/files/35377085876.pdfIn PDF document text
    • http://rimini-portal.de/bilderarchiv/file/bizofilolefogo.pdfIn PDF document text
    • http://seritour.com/rsm/files/pekatenevef.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=genius+scan+apkPDF link annotation

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