Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8dea91f38389e8e…

MALICIOUS

PDF

48.0 KB Created: 2021-09-07 00:12:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: e42316cc425687f829a0d66b133a5238 SHA-1: 8ffb4c207b39a0696cd9d37ba35f82fcf0ba12fc SHA-256: f8dea91f38389e8e938c11494fb5233530d9304e2a6a0c66036c13c6a4e1f5cf
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a phishing or trojan threat. It contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting an attempt to redirect users to malicious sites. The presence of multiple external URIs and a link farm structure strongly implies a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7378

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.tramag.pl/upload/file/71441415410.pdf In PDF document text
    • https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072a140c55d6---rolobimanoxepifaw.pdfIn PDF document text
    • https://equalland.com/uploads/File/lilosigewodirelelafiged.pdfIn PDF document text
    • https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/160e17d6ac7f8d---binudamizetofowizu.pdfIn PDF document text
    • http://sluchatka-shop.cz/files/upload/files/kebupemama.pdfIn PDF document text
    • https://beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/08117dd957a5f8b55ba3679ed3e16ce2/57073296562.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160c659a9ecafc---wijij.pdfIn PDF document text
    • http://aylincinarli.com/fckfiles/file/5088996684.pdfIn PDF document text
    • http://malbreil.com/userfiles/file/84111809092.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/5ddd5a0e16869601134bbf26aa997430/gagirewubixe.pdfIn PDF document text
    • http://www.associatedomains.com/wp-content/plugins/formcraft/file-upload/server/content/files/160812ca62059d---fumebovudozemo.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/5d5aaa4ab40854093bca97b0c8a76b30/samupiwezexulowo.pdfIn PDF document text
    • http://www.pics4us.de/userfiles/file/lekebirirabusure.pdfIn PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/bova9qhpommhtfvalpr9d9g9ot/vigapanamalubowef.pdfIn PDF document text
    • http://criollo-cocoa.com/userfiles/file/tunogozosekowikuzimirib.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160858f7ed5376---56031835311.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/q54ukjleum8ij5qume6d1gl490/77677431250.pdfIn PDF document text
    • http://unityproductions.com/upload/files/9485547982.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/kmvsoqtgpah7i4bjf2jc5f8fi6/bamiwivejiguriberibiluza.pdfIn PDF document text
    • https://medgal.pl/admin/ckfinder/userfiles/files/nitutipozugobarupinupilaw.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/05a80ad363d0686f00cb946bee25abf1/69413856002.pdfIn PDF document text
    • http://lynxitservices.com/ckfinder/userfiles/files/7454496736.pdfIn PDF document text
    • http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/fc6fe9b62fc12bacd716d3a5f613c357/53199904832.pdfIn PDF document text
    • https://xn--80aaa1anac6cg.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/bd8d9319c42eea129465de4bb0539ff4/53459625631.pdfIn PDF document text
    • http://mtjjt.com/2013/upload/article/files/210824223616803452smjrr.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=naming+binary+acids+and+oxyacids+worksheet+with+answersPDF link annotation

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