Malicious PDF — malware analysis report

Static analysis result for SHA-256 397c09e5da894fcc…

MALICIOUS

PDF

71.3 KB Created: 2021-07-07 15:51:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: db72884182986c00ab20d86322cd4f68 SHA-1: fa1b75124f1135efaf329105582b34059d00546b SHA-256: 397c09e5da894fcc29cf0b5b0ad0f6881596c2bb739ed1ccd16ef44a272e6588
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, many hosted on compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. ClamAV detection as 'Pdf.Phishing.Trojan' further supports a phishing or trojan distribution intent. No scripts were extracted, but the overall structure and URL patterns are indicative of a phishing lure.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3494

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://queure.ru/uplcv?utm_term=st+giles+hotel PDF link annotation
    • https://www.beadvised.co.uk/wp-content/plugins/super-forms/uploads/php/files/fae76024d1e8dc1b100c196348c74d98/84336180994.pdfIn PDF document text
    • https://webbsoil.com/home/webb/public_html/ckfinder/userfiles/files/riboxiduvovimuvuwenoga.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083d88499444---31503836876.pdfIn PDF document text
    • http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a306835f5db---29251766870.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/e85ce80f1efb4b4d0038312b65eb549d/65665376255.pdfIn PDF document text
    • https://hiampelectric.com/wp-content/plugins/super-forms/uploads/php/files/73115a55079efea97c2dd743b64a7126/65713552549.pdfIn PDF document text
    • http://studiodrago.eu/userfiles/files/17816323119.pdfIn PDF document text
    • http://ricoconsultingattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fimeburufusedibovuwaxun.pdfIn PDF document text
    • http://dinskayarealty.ru/media/file/96688654936.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/1ccd97d9b54230197b77654aa37b5c13/pobowizawodajixejukuduzum.pdfIn PDF document text
    • https://faprosid.com/file/14795653259.pdfIn PDF document text
    • https://laps.pl/userfiles/file/77929318950.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/16088ea2747d6a---diwigusuninixikutasome.pdfIn PDF document text
    • https://akproauto.com/nbloom/fckuploads/file/56205501033.pdfIn PDF document text
    • http://jshtextile.com/UserFiles/file///10572083938.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae7fdc7aa8b---xozalif.pdfIn PDF document text
    • http://consoles-a-gagner.com/fckeditor/userfiles/file/73746863722.pdfIn PDF document text
    • https://doublehair.center/upload/ckfinder/files/34109634684.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609b0d7b6248f---kitaximupaka.pdfIn PDF document text
    • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/7853b6512da2b7ba017a96fd77c7e6b3/32557467777.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/78934e1b6d401e200d3853efc82bb92b/9044497967.pdfIn PDF document text
    • http://bahattinburyan.com/userfiles/file/dununukerid.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/1609c68d44dbe2---74577328576.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073e507036d1---xejuzosogizixifugidodil.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160758c48a3abd---50764345356.pdfIn PDF document text
    • https://cald-lighting.com/wp-content/plugins/super-forms/uploads/php/files/3b543d7487ce00728ca319755e478852/ziwupubinasomo.pdfIn PDF document text

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