Malicious PDF — malware analysis report

Static analysis result for SHA-256 db973594ce29a50a…

MALICIOUS

PDF

62.5 KB Created: 2021-09-16 22:00:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 283f7ece44a2b20db486c7ae47dfaaa6 SHA-1: e3faa27a2507acd7098c64947905316dcecc512e SHA-256: db973594ce29a50acb85733b42354bf14c42df5b13a69b12256d6dfee115c58e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs that point to various websites, many of which are hosted on compromised WordPress installations or disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of external URI heuristics and link farm indicators confirms the document's purpose is to redirect users to potentially harmful external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7012

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://smidgel.ru/uplcv?utm_term=dark+lord+the+rise+of+darth+vader+read+online PDF link annotation
    • http://iiiemjobs.com/FCK_Editor_Images/files/segamafusenopologase.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613c93f56ccfb---bedutiriguxefutokedowasar.pdfIn PDF document text
    • http://lempreintedubois.fr/userfiles/lempreintedubois.fr/file/tozivoriluzud.pdfIn PDF document text
    • https://winpoasia.com/ckfinder/userfiles/files/lebutuveb.pdfIn PDF document text
    • https://funcarele.com/ckfinder/userfiles/files/ninarufok.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/v06aj9hqrh1cnnen78fh24230r/gazijeginogivoxu.pdfIn PDF document text
    • http://tabbanbros.com/admin/fckeditor/editor/filemanager/connectors/upload/file/bexexagojabovemibalotad.pdfIn PDF document text
    • https://mobile-translator.eu/app/webroot/media/files/rogem.pdfIn PDF document text
    • https://semot.com/Store/userfiles/file/karikidex.pdfIn PDF document text
    • http://www.radanhorse.com/resource/files/66680816557.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/03c26694602f5a1762611297a84429dc/66450613231.pdfIn PDF document text
    • https://j26clean.com/upload/files/mewagilaruxobi.pdfIn PDF document text
    • http://cngwalk.com/fckeditor/userfiles/image/rewasiloxibubobelibebud.pdfIn PDF document text
    • https://holycrosshealthcare.com/userfiles/files/48410947705.pdfIn PDF document text
    • http://careerhack.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613830114ace0---13880589347.pdfIn PDF document text
    • http://laboratoriodiprogettazione-ve.it/userfiles/files/rupuxegub.pdfIn PDF document text
    • http://klpa.net/userData/board/file/soluvilotudatadubu.pdfIn PDF document text
    • https://csom.cz/wp-content/plugins/super-forms/uploads/php/files/7929e25818d1d156cc6c95c3aa3b64b2/3707395110.pdfIn PDF document text
    • https://mytutr.com/wp-content/plugins/super-forms/uploads/php/files/cb9fffe8dadba603237f113637aee048/gijunipimukufoj.pdfIn PDF document text
    • http://sro52.ru/uploads/files/38243491231.pdfIn PDF document text

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