Malicious PDF — malware analysis report

Static analysis result for SHA-256 491f60a3ed28de47…

MALICIOUS

PDF

136.1 KB Created: 2021-08-05 09:55:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 2b506870f9e5e637aeab765299a00a50 SHA-1: 81d39b83b706174a5bdfdab009880dd10ba98cf4 SHA-256: 491f60a3ed28de47528e9b96f01020937a56629cb05cd66905f1af0a69ea4e44
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a phishing trojan by ClamAV. Heuristics indicate it functions as a link farm, directing users to multiple compromised WordPress upload storage locations and disposable hosting sites. The embedded URLs likely serve as lures to phishing pages or malware download sites, attempting to trick users into believing they are accessing legitimate content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4609

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://laborke.ru/uplcv?utm_term=magnetic+properties+of+actinides+pdf PDF link annotation
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/161007f28e5035---lubebikefumewatawimejofe.pdfIn PDF document text
    • http://tunesistudio.eu/userfiles/files/vatativuboxarexesoriwopil.pdfIn PDF document text
    • http://benthanhsgfarm.net/images/uploads/files/50388884305.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/ece96a56e05a9fcecf8621118cfcadf5/17141609177.pdfIn PDF document text
    • http://thuduchouse.vn/pics/file/bizelogij.pdfIn PDF document text
    • https://magerp.org/upload/files/22856134088.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160a046f0b1b91---fepibobewawa.pdfIn PDF document text
    • http://www.motionmantra.com/userfiles/files/wixamuzuginizibikora.pdfIn PDF document text
    • http://canigrup.com/userfiles/file/bomaxubukeliz.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/160e94a63546fd---togelamimutelapomo.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/5ji3t9t6lskd1e53eps2vpthdc/pixowolavomisubileboz.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/16072c776c0c27---74494877858.pdfIn PDF document text
    • http://xn-----6kcaheblih5ab0a6afqbzoqe.xn--p1ai/ckfinder/userfiles/files/kasaxopajed.pdfIn PDF document text
    • https://palcev.ru/userfiles/file/laduganagisogigeme.pdfIn PDF document text
    • https://najlepsze-w-polsce.pl/uploads/fikemalixoruzijapekusur.pdfIn PDF document text
    • http://svazekobciorlice.cz/userfiles/file/zepogaxe.pdfIn PDF document text
    • https://inmaabiladi.com/userfiles/files/wivozet.pdfIn PDF document text
    • http://limeitec.com/upfiles/editor/files/bamopekajexafuko.pdfIn PDF document text
    • http://qboardapp.com/wp-content/plugins/super-forms/uploads/php/files/00e517ca5cd72dbffdc28b9e4731d8aa/tanofasisipuxobe.pdfIn PDF document text
    • https://monarchwinemerchants.com/wp-content/plugins/super-forms/uploads/php/files/711ab1b45f3e122c0f39ac10158764df/20228040462.pdfIn PDF document text
    • http://anandtouristcorporation.com/uploads/67177362129.pdfIn PDF document text
    • http://az4group.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16088c9506f42f---pulekatotetatof.pdfIn PDF document text
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/5b471beb68c000935ca8d64da128aa82/tiredaromedewiwupojul.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/78549880210.pdfIn PDF document text
    • https://hotelristorantenovecento.it/wp-content/plugins/super-forms/uploads/php/files/868e966e4ffcff63d33c928ab625bd48/57647570293.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160706b225dad8---farumapomifife.pdfIn PDF document text

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