Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcfc363046b1b5be…

MALICIOUS

PDF

49.8 KB Created: 2021-09-13 06:20:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 501597a8177b29da312b4405c8baaacc SHA-1: 74010303124417f979a07d108520b689b0b2d208 SHA-256: bcfc363046b1b5bee0076daba228d5885bbde70f229a316035b5df5c704be1e6
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and is identified as a link farm, with many URLs pointing to potentially compromised or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution by redirecting users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7449

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://anquocrealty.com/uploads/image/files/4242400686.pdf In PDF document text
    • http://studiotecnicoligioni.com/userfiles/files/15134261267.pdfIn PDF document text
    • http://gwardiajuvenia.pl/zdjecia/fck/file/zapisetizomaxim.pdfIn PDF document text
    • https://ginniglobal.com/uploads/file/7460964496.pdfIn PDF document text
    • https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613bc3c84d827---42923494063.pdfIn PDF document text
    • https://rajaketiga.com/contents/files/togeguzinemaxigifonijoduz.pdfIn PDF document text
    • http://ph-easycome.com/userfiles/file/pedonozomap.pdfIn PDF document text
    • https://sanvexe.vn/webroot/img/files/nobelagudevufasorivubabed.pdfIn PDF document text
    • https://bibliotheque-des-arts.com/ckfinder/userfiles/files/71769744564.pdfIn PDF document text
    • https://debo-fit.be/userfiles/file///sibonipukurefomaxonu.pdfIn PDF document text
    • https://codefon.hu/js/ckfinder/userfiles/files/xugoje.pdfIn PDF document text
    • http://computerdoki.hu/user/file/juzezufile.pdfIn PDF document text
    • https://sibservis.com/ckfinder/userfiles/files/90439111277.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/161333e043b497---disumu.pdfIn PDF document text
    • http://sinosteelcode.com/filespath/files/20210913103415.pdfIn PDF document text
    • http://demirlermetal.com/resimler/files/87710358088.pdfIn PDF document text
    • https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613d72b29ea8e---rugakewiwa.pdfIn PDF document text
    • http://chinalabware.ru/d/files/nerikoxomisakejusew.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/61empsv7cfcimuvmes5l2mb9r2/lelularadikuwof.pdfIn PDF document text
    • http://kfnmdg.com/upfolder/e/files/20210904061553.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/zafapogusijupuweruguros.pdfIn PDF document text
    • https://sergiomauri.com/images/file/7719401575.pdfIn PDF document text
    • http://zkmeiqi.com/admin/ckfinder/upfile/files/8381128155.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=supprimer+d%C3%A9finitivement+application+androidPDF link annotation

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