Malicious PDF — malware analysis report

Static analysis result for SHA-256 90832440ae4e8984…

MALICIOUS

PDF

71.6 KB Created: 2021-07-24 03:41:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 11d4f63bdf27066cf4be7d877be55bf9 SHA-1: 8e5de4c4e47b5981d0d284c49bfb0bc4a194799e SHA-256: 90832440ae4e8984e72f9f206c765273347405a275fd7d8ba87ff774615c180b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of links, many pointing to compromised WordPress sites and other PDF files, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the structure itself is the attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7390

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://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/408c3cf6dc7ce1081778ddf6130a8863/96466478228.pdf In PDF document text
    • https://mn-lawfirm.com/box/userfiles/file/bavebej.pdfIn PDF document text
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/i8b6u7uivjkh0e86ldk050tv80/wuzetalifoxesakidogizodi.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a56cd0972c4---35157557026.pdfIn PDF document text
    • http://mp-journal.com/media/file/14509325046.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160808b04e230a---wugufejikiga.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078e8532d7ba---33751546378.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/5fdbd3a320ef5e6db1d973deeeba5c6b/lutalawasababupubive.pdfIn PDF document text
    • https://yuktiedu.com/wp-content/plugins/super-forms/uploads/php/files/00bb05e8d5cb7d44de4122a6204dcc0b/98182098049.pdfIn PDF document text
    • http://mai-colle.jp/userfiles/file/86256587162.pdfIn PDF document text
    • http://baanpowertrain.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075a6e22d716---wiweb.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609716fc288c5---kanofesoxenizutepugab.pdfIn PDF document text
    • http://1984wnhs.com/clients/2/25/250e0aaa51dad033202e6c34d8602b4d/File/modusafuwa.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607f0c20ee335---robemovosegimeditunufod.pdfIn PDF document text
    • http://hgbs.de/userfiles/file/vivosuzuvozuxadesoguv.pdfIn PDF document text
    • http://lagrupacio.cat/file/tijogiwolumopaka.pdfIn PDF document text
    • http://dogoxuavanay.vn/uploads/files/18931009431.pdfIn PDF document text
    • http://progfin.pl/userfiles/file/13850656080.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/5eb0d4424d544d1d12c91601ceb4d8f5/tisasewunenawop.pdfIn PDF document text
    • http://artepcb.com/upload/files/joketod.pdfIn PDF document text
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/baa7e779f51bb1f497689f29ad839ceb/paxafubobima.pdfIn PDF document text
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160767facbc8bd---4605727.pdfIn PDF document text
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c2b17562fb6---72430011983.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/1ea5ffcbffe6dfa94db4bcb9dab56b7a/28923668009.pdfIn PDF document text
    • http://bkdesign.ee/userfiles/file/48287995218.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/b88814aeae1c3508d354a2743358c446/48403853783.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/PmAiG5ZyT-k/uplcv?utm_term=what+is+the+difference+between+open+ended+and+closed+ended+loansPDF link annotation

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