Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c58bdb6e1a10ed6…

MALICIOUS

PDF

62.9 KB Created: 2021-07-14 10:11:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 2fd5c952094ccff71c7376ff6a931fec SHA-1: be961e2b43b45d2f93a1848542179d2521c3ed4d SHA-256: 3c58bdb6e1a10ed6059913f36de3226ef237842f258318a5554b362bb7f7344c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous external links, many of which point to compromised WordPress sites or disposable hosting, suggesting a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier further support its malicious nature. Although no scripts were explicitly extracted, the nature of the links and the PDF structure indicate a likely attempt to redirect users to malicious sites, potentially involving JavaScript execution on the target sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5714

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://catamma.ru/uplcv?utm_term=pirates+of+the+caribbean+series+streaming PDF link annotation
    • http://bmsorganica.com/userfiles/file/nikisenozegigi.pdfIn PDF document text
    • http://chapelguild.com/images/usr/54876991090.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7e59a99366---derijavutigibanizu.pdfIn PDF document text
    • http://cn-polylysine.com/d/files/55623665559.pdfIn PDF document text
    • https://www.ideaklinikizmir.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075e4a8c4875---84569805503.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/31969e191cbd01d54774996a2342e34d/farotalemikevubota.pdfIn PDF document text
    • http://japan-railpass.info/images/blog//file/55907784271.pdfIn PDF document text
    • https://elicopter-de-inchiriat.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160a3e74f23460---69462038986.pdfIn PDF document text
    • http://ymy-tea.tw/upload/files/tukidogideto.pdfIn PDF document text
    • https://www.kadinlarsitesi.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a5b4b985b97---61457789143.pdfIn PDF document text
    • http://pebyte.com/wp-content/plugins/super-forms/uploads/php/files/qbd0gjvt4rpghc9p8riotdn2nr/tiful.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b8aee3cd2e0---71602833786.pdfIn PDF document text
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/160873d660606c---kawigit.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/1bfb1901eb7a2e0e8662040f770498d7/22169728026.pdfIn PDF document text
    • https://angkorphotographyguide.com/userfiles/file/16648189092.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b209e4bef09---tifuju.pdfIn PDF document text
    • http://mko-yug.ru/wp-content/plugins/super-forms/uploads/php/files/e3214d3567aeb728c804192668059e3e/5103563933.pdfIn PDF document text
    • http://apexibd.com/uploads/fck_uploads/file/33212868073.pdfIn PDF document text
    • http://emailreceptionist.net/userfiles/file/57480477853.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/4ca21c70deab572a09558a5c1f8fc9dc/13727883673.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/59dedf62059d2e3f6145d59f3dccb79f/79474595241.pdfIn PDF document text
    • http://rustproofingottawa.com/userfiles/file/ziboxoviveforuv.pdfIn PDF document text
    • https://tvmreza.tv/ckfinder/userfiles/files/mivap.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608338be3821a---noleguvitametofexexoxu.pdfIn PDF document text
    • http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/160bb73be2fe21---filaxorimewat.pdfIn PDF document text

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