Malicious PDF — malware analysis report

Static analysis result for SHA-256 32bcabe9414f1128…

MALICIOUS

PDF

51.6 KB Created: 2021-09-03 23:55:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 7f46fd02dd31145d935fd5dab216ff4b SHA-1: 3dbfdb0f113af7b204e8be5442e192aeb7750d8b SHA-256: 32bcabe9414f1128c407ba2fee3971e527a23f84f218116a4db4b1af3b12be47
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a link farm, with many URLs pointing to compromised WordPress sites. The ML classifier and ClamAV detection indicate malicious intent, likely to phish or distribute further malware. Although no scripts were extracted, the structure and URL patterns suggest a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6215

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://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608975c79a81d---2082021732.pdf In PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/b1e2d73151ec36468c4555023053bed3/ramevalofekevof.pdfIn PDF document text
    • http://studiopassarotti.it/userfiles/files/xuxokopusubakil.pdfIn PDF document text
    • http://agierresrl.it/userfiles/files/95179516544.pdfIn PDF document text
    • http://pk.mo/userfiles/file/tejorowelolugani.pdfIn PDF document text
    • https://forumhotel.by/wp-content/plugins/super-forms/uploads/php/files/4qf4ql4gc93ejt7bmhahfkkr86/viwivodenaribajemekifeped.pdfIn PDF document text
    • https://maintogelonline.info/contents//files/tejaxepejimepaj.pdfIn PDF document text
    • http://ibshop.gr/uploads/_uploads/files/dizegegenabasuvon.pdfIn PDF document text
    • http://gramercy-grand.ru/files/file/67035290818.pdfIn PDF document text
    • https://handientu.vn/userfiles/file/mironopaz.pdfIn PDF document text
    • https://asken.as/bilder/file/bonasebovamaxo.pdfIn PDF document text
    • http://inbeeldt.nl/userfiles/file/79870407774.pdfIn PDF document text
    • http://asiavent.com/UserFiles/file///luletejigalamonununilu.pdfIn PDF document text
    • https://people11people.com/uploads/File/lavonakuvobusezugejup.pdfIn PDF document text
    • https://biogenetixpharma.com/ci/userfiles/files/fonugetalajibepafelesa.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/f6ascks3j7vhvbtt0i4ots8qb4/97884196318.pdfIn PDF document text
    • http://creaorganization.com/depo/sayfaresim/file/tusuvamafapuwutepifuper.pdfIn PDF document text
    • http://emotionpicturesfestival.gr/userfiles/file/wipevevojunat.pdfIn PDF document text
    • http://blpest.com/UserFiles/file/fobeviminotofukisimavix.pdfIn PDF document text
    • http://drironcat.com/images/file/23129212922.pdfIn PDF document text
    • https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/9fbd8b1cbe82265d51b331c8ce776374/jiwupipuvibe.pdfIn PDF document text
    • http://doreenindiatours.com/userfiles/file/42446134793.pdfIn PDF document text
    • https://norservis.cz/files/files/xiloritonipafeto.pdfIn PDF document text
    • http://x-site.by/upload/editor/files/patitibexajarojipusaxuza.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/slb56toiqhdei77ev8cg11gq60/59211997074.pdfIn PDF document text
    • https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/abc2d6ebbb478035dc15d4fc0fb49fe7/21694897292.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=present+simple+vs+present+continuous+exercises+b1+pdfPDF link annotation

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