Malicious PDF — malware analysis report

Static analysis result for SHA-256 89115d30ea2f6e56…

MALICIOUS

PDF

48.0 KB Created: 2021-09-04 19:17:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 2ab39b222f8610b68ab661312386a0e7 SHA-1: 63c4b8333dcd9f43da4784e8da9e4183ec550681 SHA-256: 89115d30ea2f6e56cccf60c31463d8d5685202c65648dd01cac31c6617d503dd
154 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised or disposable hosting, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' confirms the nature of the links, and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' indicates the use of compromised infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7013

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://mmbc.cz/_data/user_files/file/pelexesarinexadizakuzini.pdf In PDF document text
    • http://mecaniquekd.ca/upload/file/xafetoge.pdfIn PDF document text
    • https://xo-sound.ru/userfiles/file/92712451432.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1609b451464a6b---89586128766.pdfIn PDF document text
    • http://naviway.su/upload/files/63556267154.pdfIn PDF document text
    • http://3gr-group.com/ci/userfiles/files/dikujokudukezozivizip.pdfIn PDF document text
    • http://sxhk365.com/uploads/file///tumidolubovejavi.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1334f31ff---93133773389.pdfIn PDF document text
    • http://lixupeng.com/uploads/files/nevevumefidebetakezir.pdfIn PDF document text
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/17c30affcd80507f2cfada94a6a42274/67685610976.pdfIn PDF document text
    • https://fullgame.hu/uploads/files/dopeto.pdfIn PDF document text
    • https://airtelco.com/data/users/_/email/files/naluritewajopinelanu.pdfIn PDF document text
    • https://digicpictures.com/downloads/lavaf.pdfIn PDF document text
    • http://3bbb.fr/ckeditor/upload/files/famofozijafiladezesile.pdfIn PDF document text
    • http://color-gateway.com/userfiles/file/64626575895.pdfIn PDF document text
    • https://ehblending.com/wp-content/plugins/super-forms/uploads/php/files/143e58f9d4e7284be46c79c882252af9/vasavabu.pdfIn PDF document text
    • http://rc-mst.com/mst/_upload/files/wisofogoxoridewi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=best+pdf+editor+for+windows+freePDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.