Malicious PDF — malware analysis report

Static analysis result for SHA-256 2942a1176ff4baa1…

MALICIOUS

PDF

54.6 KB Created: 2021-09-06 17:25:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 3094ef1d2b41e626f3d6581ecaf5df1e SHA-1: 132fde9e0730da1022b984cc8f83886892851d19 SHA-256: 2942a1176ff4baa1f0b9adf7fd01d746fe3b0404ff7f966d81a1cd7471963c9f
154 Risk Score

Malware Insights

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

The sample was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains numerous links to compromised websites, suggesting it functions as a link farm to distribute malicious content or phish users. The PDF structure and embedded links point towards an exploitation attempt, likely for client execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6099

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.napariverinn.com/wp-content/plugins/super-forms/uploads/php/files/dc9b7a1ad689d7af5dcfce3a4ee4c462/suvusutiwipir.pdf In PDF document text
    • http://caratow.nl/userfiles/file/wipefenuxigadijebokegeja.pdfIn PDF document text
    • http://alliance-ltd.com/userfiles/leloreputesuraratibobegat.pdfIn PDF document text
    • https://markiza-trade.ru/admin/ckfinder/userfiles/files/wowisivigamuduxafak.pdfIn PDF document text
    • http://capitolmetrophysicaltherapy.com/userfiles/file/kerogekux.pdfIn PDF document text
    • https://sandalyecenneti.com/wp-content/plugins/super-forms/uploads/php/files/g5vrj1ahk53mid4m0n6rd888n6/70723590584.pdfIn PDF document text
    • https://nmcs.ca/userfiles/files/rekoremajiwetut.pdfIn PDF document text
    • http://recviem.ru/img/upload/29105473955.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a26c1bcc530---xutawoviv.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160743ac3d0384---14953496491.pdfIn PDF document text
    • http://scheiden-maassluis.nl/uploads//file/piloluroxonufetuj.pdfIn PDF document text
    • http://fpempresa.cen.es/userfiles/files/dilusovoguzigukudumazod.pdfIn PDF document text
    • http://sammyuriasproperties.com/userfiles/files/87173154579.pdfIn PDF document text
    • http://www.consorcio.edu.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1608c3d912ff62---wunirurelifiwegudexij.pdfIn PDF document text
    • https://presstone.hu/userfiles/file/91772972391.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/57c48e547094568b0d85e771711225a1/sudajepipigaxapupala.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed32aae63a---44890374991.pdfIn PDF document text
    • http://ebanksunited.com/clients/7/7d/7da19d52c1086e69e61582739ce98a0f/File/22471806150.pdfIn PDF document text
    • http://incomingmakedonia.com/files/files/gufisajozamepavumagufakuj.pdfIn PDF document text
    • https://allmassage.net/upload/file/20210707081103.pdfIn PDF document text
    • https://balaji-technology.com/userfiles/file/fipedekoni.pdfIn PDF document text
    • https://kodcomputers.ro/2664/uploads/ripufisemiput.pdfIn PDF document text
    • http://tomaszfilipczak.pl/userfiles/file/83893900082.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=magic+the+gathering+arena+of+the+planeswalkers+rules+pdfPDF link annotation

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