Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fb6c82a6323aa76…

MALICIOUS

PDF

63.7 KB Created: 2021-07-03 20:51:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 31add15b4ca13cd1dd971edf2cc5183e SHA-1: 04c8bdd9490320b1ad18de490d00a6cd158519e2 SHA-256: 2fb6c82a6323aa76ddcd4e9bb438fe55a04ebf1eddc74205b3938f3fb0022c1d
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, indicative of a link farm designed to redirect users to malicious content. ClamAV identified this file as 'Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0', further supporting its malicious nature. The document body is heavily obfuscated and unreadable, providing no direct clues to its specific purpose beyond the link farm heuristic.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4984

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://lacaune.hu/userfiles/file/29116106079.pdf In PDF document text
    • http://samnakthodrahassob.com/userfiles/file/79845095363.pdfIn PDF document text
    • https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088d5b19c52a---tatekigoboropidotunu.pdfIn PDF document text
    • http://jnnycc.org/userfiles/file/32157198024.pdfIn PDF document text
    • http://sarljarry.fr/userfiles/file/xuwamuzaget.pdfIn PDF document text
    • https://mayurherbal.com/userfiles/file/45035349580.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/b44edb86c11018f3e57782814e6cc811/gigunisapedexozaloboteluv.pdfIn PDF document text
    • http://arkystudio.eu/userfiles/files/kelasiv.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/e9394e0df1b99810aab49080e7f88d58/mipajawipile.pdfIn PDF document text
    • https://takeorders.online/wp-content/plugins/super-forms/uploads/php/files/ei2f3gjiia18pi51ctm8r5qm6c/lolonatigowa.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d5e416b51e5---xirufudunaragopekeredaf.pdfIn PDF document text
    • https://victory-agency.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609493cd83baf---7386920790.pdfIn PDF document text
    • http://www.peretprod.ro/content-images/file/61100344223.pdfIn PDF document text
    • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/8b2143e82ff7d1b865846e8b959d8100/pexefedapusabaxozumivig.pdfIn PDF document text
    • https://vinisfarm.com/wp-content/plugins/super-forms/uploads/php/files/a17f98eb463f59516e81e8cbfa9ed1c6/46345407474.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/73547e3280f23afa82ec9519ae973780/37828805036.pdfIn PDF document text
    • https://lawina-radom.pl/files/file/39931946362.pdfIn PDF document text
    • http://prtourusa.com/FileData/ckfinder/files/20210626_0DF7B7D606B52200.pdfIn PDF document text
    • https://quickonboarding.com/wp-content/plugins/super-forms/uploads/php/files/88cbdd1ed6e76f793b535db5663ea119/lefezemivoludisojudomine.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a758543ed0e---lojitugavugubar.pdfIn PDF document text
    • http://omegapizza.net/uploads/files/wowekopoladobo.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a4041176fad---93170391411.pdfIn PDF document text
    • http://startent.ru/SITE/files/editor/file/zidif.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/kphd402qnt13ku49cgog9dqs5s/15589897822.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=so+long+thanks+for+all+the+fishPDF link annotation

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