Malicious PDF — malware analysis report

Static analysis result for SHA-256 14ceee63f466f41b…

MALICIOUS

PDF

64.0 KB Created: 2021-07-26 09:22:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 8968ef1538d6b9647ae5224cd8af70ab SHA-1: 070af690cf83156d264aefbeaf6b63860c1e00ba SHA-256: 14ceee63f466f41bd2aa7d3d1d67095d4279e3cc53631def66bed4d309e5d4ca
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it's likely a phishing or malware distribution lure. It functions as a link farm, with numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of external URIs and a link farm structure strongly supports a phishing or malware delivery attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9604

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://kawanmto.net/contents//files/kezowuzajogokimaxo.pdf In PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e8d8d17b58---43973616797.pdfIn PDF document text
    • https://vuaship.com/wp-content/plugins/super-forms/uploads/php/files/iqvnj5v968c1uqavtj2et6jr8u/refavomuderelirevexaled.pdfIn PDF document text
    • http://ural-resyrs.ru/data/file/61981040467.pdfIn PDF document text
    • https://earthchartercities.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b9aff248e1d---70153420140.pdfIn PDF document text
    • https://rieker-consulting.eu/files/file/dafujaguguvevavelozik.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bdeeb6d7287---27561129853.pdfIn PDF document text
    • https://lacaune.hu/userfiles/file/97905346828.pdfIn PDF document text
    • http://carroll1975.com/clients/4/4e/4e2b018d07aaa5a30c3e4fca1c7a8df7/File/13181495835.pdfIn PDF document text
    • http://www.asejnrtigers.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606caf6e56302---10377239875.pdfIn PDF document text
    • http://teormech.ru/teormech/usrimg/file/muxusubok.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160b42818360a4---karagiw.pdfIn PDF document text
    • https://laneopx.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b6546e12e4---verevaguzuwoseraj.pdfIn PDF document text
    • http://chiangmai-clean.com/user_img/files/meritupelufatizek.pdfIn PDF document text
    • https://www.ideaklinikankara.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083c17b2928b---vibusu.pdfIn PDF document text
    • http://timandlor.com/userfiles/file/jukabajekuvepufe.pdfIn PDF document text
    • http://3suntech.com/UploadFile/file/20210607095445130.pdfIn PDF document text
    • http://netinflux.net/userfiles/file/kejaturewaduwusofuw.pdfIn PDF document text
    • https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/qo9u2ql2bip1o5riefh37beke4/levan.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607943c93dc7c---puvoba.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c507eee4e3b---gisujuteko.pdfIn PDF document text
    • http://savalis.ru/userfiles/file/vodenarevimemo.pdfIn PDF document text
    • http://se-ty.ru/uploads/userfiles/file/69984299792.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=how+to+use+a+royal+typewriterPDF link annotation

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