Malicious PDF — malware analysis report

Static analysis result for SHA-256 7286e1626621c5f1…

MALICIOUS

PDF

83.2 KB Created: 2021-08-01 01:02:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 192456f1758b4f8189ca29728d895ef1 SHA-1: e1c5a89b968b624cade2458f53e3d3e5e6f542a9 SHA-256: 7286e1626621c5f1856655c1c3457fa5e4f9a82df79b33577d79bc3b35ebaa8f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to distribute malicious content. The ClamAV detection as 'Pdf.Phishing.Trojan' and the ML classifier further support its malicious nature. No scripts were extracted, but the structure and URL analysis indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9465

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://stcc-sa.com/motakamel/Ups/files/73477803836.pdf In PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/f2k1soreqsjkdjrf8likr9r093/serefanowisekabuwolev.pdfIn PDF document text
    • http://utpcomp.ru/uploads/files/zugopupesiwaxa.pdfIn PDF document text
    • https://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/160e1fa590e859---gavitugewopejikarokeni.pdfIn PDF document text
    • https://rosenstein.lu/userfiles/files/79086003504.pdfIn PDF document text
    • https://havadisname.com/upload/ckfinder/files/nubexozaputikidamis.pdfIn PDF document text
    • https://rhdplumbing.com/wp-content/plugins/super-forms/uploads/php/files/ec8fb68fa50cd64d98a3741fd8f68bb0/kasetizowelofu.pdfIn PDF document text
    • http://www.thediethub.in/wp-content/plugins/formcraft/file-upload/server/content/files/160d8c6a1c9a39---tererulitutizutujosuvejod.pdfIn PDF document text
    • https://ihotel2b.com/upfiles/editor/files/juvav.pdfIn PDF document text
    • https://filetorme.com/upload/files/7683474309.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/68977700641.pdfIn PDF document text
    • https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/d627dc44af29fa3530958ce26250d1e7/61984626806.pdfIn PDF document text
    • http://w-mill.jp/images/file/15303261960.pdfIn PDF document text
    • https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/adt13748b1qlvi4n8k9r5nag97/22244803151.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f2282765ccd---42160512099.pdfIn PDF document text
    • https://boyanbolyarski.com/userfiles/file/xabukin.pdfIn PDF document text
    • http://orourkelawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/84860852802.pdfIn PDF document text
    • https://dejavuruse.com/userfiles/file/26444000277.pdfIn PDF document text
    • https://people11people.com/uploads/File/savila.pdfIn PDF document text
    • http://plafondchauffant.fr//img/user/file/7150586946.pdfIn PDF document text
    • https://miamivanservice.net/wp-content/plugins/formcraft/file-upload/server/content/files/16083fd1ddba94---jibamiri.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073fb24c9aa1---90067237320.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=introduction+to+statistical+quality+control+8th+edition+pdf+free+downloadPDF link annotation

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