Malicious PDF — malware analysis report

Static analysis result for SHA-256 261430a9ef5e2978…

MALICIOUS

PDF

63.9 KB Created: 2021-07-18 13:42:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: ee7e1e66e0222c9fa637c63a32c124b5 SHA-1: 9ff2fad5ab1ba64bc855ef8e64cc03500f95b87e SHA-256: 261430a9ef5e29784e71a5800fc400cbe312f2d86d1feb07327003720519c4a4
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample is a PDF document that contains numerous links to external resources, many of which are hosted on compromised WordPress sites and disposable domains. The ClamAV detection and heuristic firings indicate that this PDF is likely a phishing or trojan delivery mechanism. The presence of embedded URLs suggests an attempt to redirect the user to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4986

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 to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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 http://nuyewpilot.academy/wp-content/plugins/super-forms/uploads/php/files/34de241f41ed7ad39f4b4049d88bae68/koralaxepowew.pdf In PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2af9859808---xekenuzuzunitinunitope.pdfIn PDF document text
    • https://www.smartfutureexpo.com/ckfinder/userfiles/files/wezilus.pdfIn PDF document text
    • http://svaz-podnikani.cz/files/file/zozox.pdfIn PDF document text
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/160c2e75e149fe---pozopukukeguruxo.pdfIn PDF document text
    • https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/ae0d9dff2c69f35ecd29c91aafd3472f/71649367798.pdfIn PDF document text
    • http://klasykarozrywki.pl/public/images/fck/file/xenaxivixasile.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160ec989db3540---lipuwafemawobomulil.pdfIn PDF document text
    • http://55pluscommunityspecialist.com/userfiles/files/24607438035.pdfIn PDF document text
    • http://coss-wynn-reunion.com/clients/d/db/dbe3622004495b304d8703879a486b7d/File/35601660939.pdfIn PDF document text
    • https://ruiguoex.com/upfile/files/2021/06/06/pimadenamizotomovim.pdfIn PDF document text
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/ohhigap41m0dqm0m9hdtgvacqj/pibivozesawifotubosilek.pdfIn PDF document text
    • http://ambulatorioveterinarioscapindandrea.it/userfiles/files/99793858248.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b88e0c3c285---gimiserijinorurikutas.pdfIn PDF document text
    • https://autotronics.vn/userfiles/file/sobux.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/wigolaruderifanalaj.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/16078ccd0c8b6f---dexamine.pdfIn PDF document text
    • http://zxpgw.com/userfiles/file/xuvuvow.pdfIn PDF document text
    • http://nonstopsushi.com/uploads/files/dekasofapanogag.pdfIn PDF document text
    • https://dm288.com/slicice/file/laboj.pdfIn PDF document text
    • http://aaaexpressheating.com/userfiles/file/70003119911.pdfIn PDF document text
    • http://orikon.net/Images_upload/files/45005995572.pdfIn PDF document text
    • http://trekkingsapatours.com/upload/files/4439263660.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/16084bbbb024cc---15488613476.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=need+for+speed+rivals+download+utorrentPDF link annotation

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