Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b7f19096416945e…

MALICIOUS

PDF

70.6 KB Created: 2021-07-03 12:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 91210a491ff7ebc85e99cc90add3f160 SHA-1: e99e9b5b514678f6db7d119282a050de2d58c428 SHA-256: 9b7f19096416945eded60a129bb658e73d19d5580eaf0d1d43f0928afcf924b7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link farm pointing to numerous URLs hosted on compromised CMS upload storage, indicating a phishing or malware distribution attempt. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classification also flagged it as malicious. The presence of multiple links on disposable hosting and the use of compromised WordPress upload directories strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6678

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.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/9c1411f498781240b3bdbe874085a613/66288781893.pdf In PDF document text
    • https://heykidsletscook.info/wp-content/plugins/super-forms/uploads/php/files/505b21f9db68d12187e6b2021c30bb6e/pixenomeju.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/1609c2c100775b---75391503222.pdfIn PDF document text
    • http://mooneyes.pl/userfiles/file/nifigibuxalifenowi.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aa10c72a327---22200631733.pdfIn PDF document text
    • http://nail-free.com/ckfinder/userfiles/files/18672925782.pdfIn PDF document text
    • http://rentbucharest.net/images/userfiles/44824459811.pdfIn PDF document text
    • http://ezibra.pl/upload//file/gamoxurapapupalixoxede.pdfIn PDF document text
    • https://ozmutludokum.com/userfiles/file/ditadafivuvoniguwima.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2021061902484296.pdfIn PDF document text
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/613d4e178548248dce260f3ae40bc046/29511908345.pdfIn PDF document text
    • http://www.patricktennis.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160c8fa47cbf06---75068683523.pdfIn PDF document text
    • http://ceresasrl.it/userfiles/files/gevojiwujaxejiriguwil.pdfIn PDF document text
    • https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/dd1661caa55339a2b88b8f48bf262834/4107208057.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/2ed37d77d69012a84717241487bdbf71/36933413415.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/93sea9use8gbsvoe3lct6inlk0/fitikebubidularezumuvesav.pdfIn PDF document text
    • https://styliststudios.com/imagesTE/file/tuxugetazapum.pdfIn PDF document text
    • https://bladmedyczny24.pl/wp-content/plugins/super-forms/uploads/php/files/4e8dc351d67cfec36e9c6b25540dcf36/31422778892.pdfIn PDF document text
    • http://palami.by/images/file/nawixupofimup.pdfIn PDF document text
    • http://allasclub.com/campannas/file/bawawapep.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/jdg3hr6ivep5u2hq6tf34uqet6/26759303336.pdfIn PDF document text
    • https://wecareprogram.org/images/file/71961599064.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=old+greenwich+ctPDF link annotation

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