Malicious PDF — malware analysis report

Static analysis result for SHA-256 df1f396cb8fa1f17…

MALICIOUS

PDF

45.9 KB Created: 2021-09-12 23:20:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 019c42aaa5362dc4873fa332869e8c0a SHA-1: fa6f555a5a37e625bf5f4bfc7a68695f3813a433 SHA-256: df1f396cb8fa1f173de03b4fae331e5cf05582b8c7b1e8532f376aa6be0bc4b8
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to user-uploaded content on various domains, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier further support its malicious nature, likely as a phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5797

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://drafthe.ru/uplcv?utm_term=download+ipadview+apk PDF link annotation
    • http://vendsol.com/userfiles/file/63577674669.pdfIn PDF document text
    • http://alpinedelhi.com/userfiles/files/jamepekovukavavife.pdfIn PDF document text
    • http://beautifulmoda.com/userfiles/files/24518575740.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b922c0e479---97369525213.pdfIn PDF document text
    • http://medwin.kr/userData/board/file/sapawizafur.pdfIn PDF document text
    • https://hophamthaibinh.com/upload/files/befomoxiretosiroderetu.pdfIn PDF document text
    • https://mehfermobilsaglik.com/userfiles/file/37023631121.pdfIn PDF document text
    • https://valubil.com/public/uploads/cms_file/cms_files/texokegetibigivi.pdfIn PDF document text
    • http://xn--9i1b14lwsg1seumdzsx.com/upload/fckeditor/file/vufoxejejenejuku.pdfIn PDF document text
    • http://easyhypermarket.com/userfiles/file/64303006825.pdfIn PDF document text
    • http://ya-ke.cn/admin/upload/89912175772.pdfIn PDF document text
    • https://melz-feu.ru/upload/xutazisowuviwivipifowutow.pdfIn PDF document text
    • https://optimumquestsolutions.com/ckfinder/userfiles/files/ruvutiviziluvado.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/16137adfd80fad---sezesavukulumipadoriko.pdfIn PDF document text
    • http://satcomlink.com/userData/board/file/nipabuzipubebonenanefebo.pdfIn PDF document text
    • http://www.rannatennis.ee/data/upfiles/files/vukajawiw.pdfIn PDF document text
    • http://aajude.pt/backoffice/ckfinder/userfiles/files/34843219603.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/3phjju83k5fr64i8vlm0cokok0/vesot.pdfIn PDF document text
    • https://somogyplusz.hu/files/nekilejug.pdfIn PDF document text
    • http://bradhelferlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/75961262012.pdfIn PDF document text
    • http://ptichile.cl/userfiles/file/38597229103.pdfIn PDF document text
    • https://sskundal.com/userfiles/file/sawowexewo.pdfIn PDF document text
    • http://riggi.ru/userfiles/file/nepemifebu.pdfIn PDF document text
    • https://www.theknowledgeonline.com/files/lib/ckfinder/userfiles/files/90439027610.pdfIn PDF document text
    • http://xz-brand.com/ckfinder/userfiles/files/95300227027.pdfIn PDF document text
    • http://namuvaldymas.lt/userfiles/file/38273444231.pdfIn PDF document text
    • http://topenglish.sk/app/webroot/gallery/files/zeziw.pdfIn PDF document text

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