Malicious PDF — malware analysis report

Static analysis result for SHA-256 fce8993c3ab0a35c…

MALICIOUS

PDF

63.7 KB Created: 2021-09-24 12:15:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: ac984fafd5907aab24a7f5982c57a99e SHA-1: f41c0b72879c54d7b6d4774efb5519f9200e21e0 SHA-256: fce8993c3ab0a35cb758b37e7b6c69a35a74b5a82dc4d85f3669c82d332fa04f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was identified as malicious by a machine learning classifier and ClamAV, indicating a phishing or malware distribution intent. It contains numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URIs and the overall structure point towards an attempt to lure users to external sites, likely for phishing or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6241

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://garglob.ru/uplcv?utm_term=mac+app+store+download PDF link annotation
    • http://www.velkoobchod-man.eu/ckfinder/userfiles/files/18460165605.pdfIn PDF document text
    • http://golfproradost.cz/webpagebuilder/ckfinder/userfiles/files/jozutovuwukedivolegiduju.pdfIn PDF document text
    • http://otvorene-srdce.sk/userfiles/file/tadajedos.pdfIn PDF document text
    • https://penmypoem.com/new/admin/uploadfiles/file/sunagixavusirinagipufoti.pdfIn PDF document text
    • http://onlineticketreview.com/images/file/vulokukeg.pdfIn PDF document text
    • https://www.wizzfizz.com.au/application/third_party/ckfinder/userfiles/files/bofepola.pdfIn PDF document text
    • https://bawauang.com/contents/files/ririvudorunosu.pdfIn PDF document text
    • http://ncdesign.it/userfiles/files/40406820636.pdfIn PDF document text
    • http://studiotecnicopetrillo.eu/userfiles/files/76792899724.pdfIn PDF document text
    • http://zap-interactive.com/uploads/files/gesanosemasatep.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/16138b1ed1ba86---madalosipujitazam.pdfIn PDF document text
    • http://gachmenminhchien.com/media/ftp/file/46518564463.pdfIn PDF document text
    • http://jjw-led.com/userfiles/file/xifilasazobokudajagejo.pdfIn PDF document text
    • https://lhorizon.ca/uploadHorizon/file/kewitibu.pdfIn PDF document text
    • http://www.css-jp.com/upfile/files/2021/09/08/tutepitopepuxiberez.pdfIn PDF document text
    • http://vtracauto.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614569e626f4b---4518654917.pdfIn PDF document text
    • http://miyagi.chi-kara.net/Upload/files/2875221623.pdfIn PDF document text
    • https://www.actionconstructionjax.com/wp-content/plugins/super-forms/uploads/php/files/303c24cf560ae32e0531d467c1d18c75/22269807333.pdfIn PDF document text
    • https://paklya.su/design/img/upload/file/59221387802.pdfIn PDF document text
    • http://billagelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jurinisalinivuxetasapip.pdfIn PDF document text
    • https://nakipoglugroup.com/upload/ckfinder/files/68679814235.pdfIn PDF document text
    • http://www.trimbleexpress.sk/wp-content/plugins/formcraft/file-upload/server/content/files/1614b8f7bb5d42---fenigug.pdfIn PDF document text
    • http://k2plusinterior.com/userfiles/tilad.pdfIn PDF document text

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