Malicious PDF — malware analysis report

Static analysis result for SHA-256 b03adaac31b06102…

MALICIOUS

PDF

64.0 KB Created: 2021-09-01 16:55:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 3af33d7800204a3ba33fabc4b87f0caf SHA-1: fdb5a4b67ecd257641f27de9817a2d4dfbdb902a SHA-256: b03adaac31b061020be128c9dd81511f30b23fda1e868b120eca3a7f7d295e2a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains numerous links to compromised websites, indicating a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c107b27e64b---gejejimibewibugili.pdf In PDF document text
    • https://pelicanfinancialnetwork.com/ckfinder/userfiles/files/10076032201.pdfIn PDF document text
    • http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16082c297ea0d1---woreguzisewe.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/562734b27e86217ec0424eafb8c138b7/favigupege.pdfIn PDF document text
    • http://nextlab-semi.com/files/fckeditor/file/48171264977.pdfIn PDF document text
    • http://doo-san.com/userfiles/file/20210510165714.pdfIn PDF document text
    • https://extremetour74.ru/wp-content/plugins/super-forms/uploads/php/files/f82ce2e48beaafc7183d7f65c470fe1e/99327471661.pdfIn PDF document text
    • http://alnoorcity.com/userfiles/file/detubavarinarepebanuvum.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160819edd17ade---55970121288.pdfIn PDF document text
    • http://albatrossmrn.com/konadnew/userfiles/file/reniwuzatafijodateg.pdfIn PDF document text
    • https://alatheir.com/atheirwsfiles/file/nakumalujoso.pdfIn PDF document text
    • https://darkoyunpin.com/calisma2/files/uploads/70522446960.pdfIn PDF document text
    • http://krevue.cz/UserFiles/File/40325001506.pdfIn PDF document text
    • https://www.letspassdriving.co.uk/wp-content/plugins/super-forms/uploads/php/files/0e9j8cerhb77afv9m7ll555a9g/94576565286.pdfIn PDF document text
    • https://castilloexterior.net/ckfinder/userfiles/files/2068793204.pdfIn PDF document text
    • https://ajitcoatings.com/uploads/vojaf.pdfIn PDF document text
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/16090d0e4c421e---gedoxubitugipif.pdfIn PDF document text
    • https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160b09ba7172d3---77980663201.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=the+farm+breweryPDF link annotation

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