Malicious PDF — malware analysis report

Static analysis result for SHA-256 42dbe02e0f696e43…

MALICIOUS

PDF

81.8 KB Created: 2021-09-06 09:54:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 9993f84cedbbca736dcba75ede07d902 SHA-1: 944a98ecd3a630a106bbad3cb30bc9294c9e1b57 SHA-256: 42dbe02e0f696e43a1366a428d63b08e3f314f7ef2695e750b744e5adf47ce68
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as a PDF containing a link farm, with multiple heuristics indicating it points to compromised CMS uploads and disposable hosting. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports its malicious nature. The primary function appears to be redirecting users to potentially malicious sites, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3663

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.paparazzirestaurant.com.au/wp-content/plugins/super-forms/uploads/php/files/ddb7ad243b100467b9f96d9028f4bfe7/65950288901.pdf In PDF document text
    • https://aviseco.ro/userfiles/file/5451898719.pdfIn PDF document text
    • https://sonntag-immobilien.lu/userfiles/files/64060996853.pdfIn PDF document text
    • http://oresteruggiero.com/userfiles/files/timemotenewilo.pdfIn PDF document text
    • https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d7ae845d412---jalaxaro.pdfIn PDF document text
    • https://open-call.fr/uploaded/files/bepobapor.pdfIn PDF document text
    • http://sallytour.com/FileData/ckfinder/files/20210720_A8269DB1751C21CA.pdfIn PDF document text
    • http://arc-en-cielproduce.com/ckfinder/userfiles/files/bazojo.pdfIn PDF document text
    • http://witnesstherealist.com/wp-content/plugins/super-forms/uploads/php/files/32e788ac34bb922f6f20743e8c5eaf4a/84811610482.pdfIn PDF document text
    • http://spencerrandlefamily.com/clients/864257/File/19543000674.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16120ebe27d178---11861727057.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/f624eaefaf30bcfe79cd2d8a8ad55e0b/81684980286.pdfIn PDF document text
    • http://queuemanagementsystems.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f279c624c2---xoxisiso.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/452e4bd6eac47c43a151e4fe1e26c8c9/pujabapekoxepujalarojid.pdfIn PDF document text
    • http://shopgraeagle.com/ckeditor/uploads/files/12341059064.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1612ae66c71422---jibewevelolemuw.pdfIn PDF document text
    • https://georgiamusicpartners.org/wp-content/plugins/super-forms/uploads/php/files/a715052029353b6e84b370d27971fb9e/pinomasulat.pdfIn PDF document text
    • https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a118b960af9---85241858537.pdfIn PDF document text
    • https://ambalatender.com/upload/files/rasijorejaravutufavoruj.pdfIn PDF document text
    • http://homeopathyhongkong.org/files/fixebekak.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a61e8dad05f---94729724205.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/feredovolukutuvuxidif.pdfIn PDF document text
    • http://seksdagen.nl/userfiles/file/55958032328.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/160c17a535e152---73986598649.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/p4jhlmcfcte1grtu4oi2ajhk0n/20939280857.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=refresh+rate+in+computer+graphics+pdfPDF link annotation

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