Malicious PDF — malware analysis report

Static analysis result for SHA-256 8104e6657fa00de4…

MALICIOUS

PDF

59.6 KB Created: 2021-08-21 03:02:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: ecfa8f25cb92cf7961ff738d4aeca8fb SHA-1: 4c515befee1601aacddb6133450531384e3b6cd1 SHA-256: 8104e6657fa00de4855501fbcdb538d3eb674bf44872e515c52df08e2970353c
154 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains numerous links to compromised WordPress upload storage and disposable hosting, suggesting it functions as a link farm to redirect users to malicious sites. The presence of these links indicates an attempt to exploit users by directing them to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9557

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 http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8621ef1253---newuluvunibupewixi.pdf In PDF document text
    • https://ercrs.org/wp-content/plugins/super-forms/uploads/php/files/3k35rdovja3br0l78un2m7ka6u/99340211006.pdfIn PDF document text
    • https://www.groupe-coelho.fr/ckfinder/userfiles/files/duvivatikir.pdfIn PDF document text
    • http://malopolskiszlakwinny.pl/upload/File/baxixavuvif.pdfIn PDF document text
    • https://nomaquito-travel.com/editor-images/mogogugeliwagav.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/5136b4ec1059450f6f31471a62c163ec/wupanijukusokofomuxeg.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/95bcdfb82d75cb0dbb2102457d6c9708/jupiziwejarekan.pdfIn PDF document text
    • http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1607cce861db86---91316599873.pdfIn PDF document text
    • http://whkmradio.com/userfiles/file/71077504638.pdfIn PDF document text
    • http://fincasotilloviejo.es/files/sotillo/_repo/file/49205325385.pdfIn PDF document text
    • https://hijaulumut.com/contents/files/53697534361.pdfIn PDF document text
    • http://www.boldino-hotel.com/ckfinder/userfiles/files/32764272668.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b411dfaa48b---65086752339.pdfIn PDF document text
    • https://actorconseil.com/files/file/gaxafumopazijulizosegarik.pdfIn PDF document text
    • http://stylist.in.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1606eeb444f105---67842723926.pdfIn PDF document text
    • http://shosholoza.de/file/betukojamoporafefaruj.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606f59342d690---89162862899.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607f27ebdf400---70670295594.pdfIn PDF document text
    • http://flooroverstock.com/admin/userfiles/file/60770887084.pdfIn PDF document text
    • https://movesforfree.com/wp-content/plugins/super-forms/uploads/php/files/e1g7s6f1fgk6mtk42jtsca8mq7/gekibosavagoxagu.pdfIn PDF document text
    • http://akinmedical.com/uploads/file/jokejawuvuse.pdfIn PDF document text
    • https://www.sgestrecho.es/wp-content/plugins/formcraft/file-upload/server/content/files/160bd75d406dbd---zozoje.pdfIn PDF document text
    • https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/d9v52dj18mbr7c1v0b7lsr3ihd/77006964405.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/20gnsd2m8lukseehqcdd5fkfj0/11817711269.pdfIn PDF document text
    • http://www.aluvascientific.com/UserFiles/file/larosenezuvunemusik.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BvfzZFkJO3s/uplcv?utm_term=organizacion+staff+de+una+empresa+ejemploPDF link annotation

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