Malicious PDF — malware analysis report

Static analysis result for SHA-256 c960d1e9b94b2f50…

MALICIOUS

PDF

42.0 KB Created: 2021-07-15 10:30:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: 449ec58a97d28f8abd6f81d12dc0e171 SHA-1: 567f9c6788b2c294ed6c399161b09724ea5cbe94 SHA-256: c960d1e9b94b2f509017a1ca502a359e31edbe9235cb8430368acaaeb8193521
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7720

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 42 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://phantasos.org/userfiles/file/gidibexexemaxagabapesegul.pdf In PDF document text
    • https://vntdc.com/upload/fck/file/60690509654.pdfIn PDF document text
    • https://hosvagyok.hu/userfiles/file/42626462187.pdfIn PDF document text
    • http://tragiaocolamsapa.com/userfiles/image/file/46942001195.pdfIn PDF document text
    • http://rwdwebwebdesign.com/img-aim/files/27537681408.pdfIn PDF document text
    • https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/t7062tjjej3mlpneer9t9gmqn0/33276781582.pdfIn PDF document text
    • https://cherrychile.cl/cherry/uploads/contenido/files/rumofojiwuxibopavot.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/nr0g199a82o07hk12ne4mqu8oc/49192920360.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/36376d8bdfcebbd87b6c66e973a40ec3/xopekuxigulivopubetupim.pdfIn PDF document text
    • http://haki.vn/uploads/files/19550796156.pdfIn PDF document text
    • https://capitaleny.com/wp-content/plugins/super-forms/uploads/php/files/5953a32acf2c19a749eea094c362eb77/kawululef.pdfIn PDF document text
    • http://ajtoablakcentrum.com/_user/file/pufipasuliji.pdfIn PDF document text
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b8abd190de---31400893947.pdfIn PDF document text
    • http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16080b4102c1ec---86236821288.pdfIn PDF document text
    • http://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fbcf0ee37d---12649231457.pdfIn PDF document text
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/t35s89jb60jhbpmq2j03k4om03/wifutusomesazefedo.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/b8e7f2280d0965e64191a2d3af8312b7/wexujojupezowetedipof.pdfIn PDF document text
    • https://kicksomeglass.com/wp-content/plugins/super-forms/uploads/php/files/c4d595e4f487c2974f34ab6c9d293665/ziwaled.pdfIn PDF document text
    • https://facades-et-traditions.com/actualites/file/86179000248.pdfIn PDF document text
    • https://area34.info/wp-content/plugins/super-forms/uploads/php/files/eblqmlub41ggeuobudhh23uoh1/mudasog.pdfIn PDF document text
    • http://manajrgvaaradhi.com/cms-uploads/files/gekilugorejuk.pdfIn PDF document text
    • http://prodottoitalia.eu/userfiles/files/dumejijanipum.pdfIn PDF document text
    • https://amblamy.ee/upload/file/rusulaparakovu.pdfIn PDF document text
    • http://stark-tools.ru/images/uploaded/36539429298.pdfIn PDF document text
    • http://aaykpn.com/uploads/editor/files/wipilosisezunide.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/eba5b45efe442fdcde1585653916d4ad/65198020384.pdfIn PDF document text
    • https://nomaquito-travel.com/editor-images/goduj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=3+days+of+overeatingPDF link annotation

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