Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c8632812e0d737a…

MALICIOUS

PDF

51.6 KB Created: 2021-09-05 08:48:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 658cb3344250c3b90259bc30fff034d7 SHA-1: 8f087fc800db020c2ee5e12f376233f7a1f1f257 SHA-256: 7c8632812e0d737ab01894d403a4262da6428f6eb0849e9ab05a996457e8d172
154 Risk Score

Malware Insights

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

The PDF contains numerous links to external websites, many of which are hosted on compromised or disposable domains, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier flagging indicate a high likelihood of malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6164

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://drafthe.ru/uplcv?utm_term=weather+measuring+instruments+list+pdf PDF link annotation
    • https://servicepapik.ro/files/datitidazotefepusepafa.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/b26463066fce2ad5b9e937d7758d915d/76268356413.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/bc8f8516c3612afe9b0e0f32638b4a28/xezufakixasikebetoreta.pdfIn PDF document text
    • https://cbdc.co/uploads/ckfinder/userfiles/files/62946976362.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/6vr4915seo8o1cp70k0hll7p1k/diman.pdfIn PDF document text
    • http://ks4073.com/file_media/file_image/file/58889116516.pdfIn PDF document text
    • http://castudio.eu/userfiles/files/28771340956.pdfIn PDF document text
    • https://ariconium.cz/webpagebuilder/ckfinder/userfiles/files/45994761523.pdfIn PDF document text
    • http://stillwaterponies83.com/clients/74660/File/doradujorobusojupirera.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/8ff654d7f020c207ca65cf003c9d85d3/sajil.pdfIn PDF document text
    • http://bluebirdcanada.com/FileData/ckfinder/files/20210703_DF55DAEF49FA253F.pdfIn PDF document text
    • https://dom4m.by/userfiles/files/bisalodubogixalazogul.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1610489413e666---nuwupuzatuvuzovivelikose.pdfIn PDF document text
    • http://nwhouse.ru/uploads/file/95550393020.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/160943b648fb5d---lofetokofe.pdfIn PDF document text
    • https://gresathouse.com/wp-content/plugins/super-forms/uploads/php/files/036f612f2f0a38157154d415ec1946ae/80981226627.pdfIn PDF document text
    • http://onthebroadway.com/CPD/adminpanel/upload/file/xodepejirakem.pdfIn PDF document text
    • https://ddnepal.com/assets/userfiles/files/jutetaliwunosejuzibaxagux.pdfIn PDF document text
    • https://greenways.at/userfiles/file/18534126851.pdfIn PDF document text
    • http://devveb.net/userfiles/file/55310827811.pdfIn PDF document text
    • http://groupkaishan.com/d/files/67547560232.pdfIn PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a16c8c503c---gofuxevetanizikudo.pdfIn PDF document text
    • https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d521e67aae8---38086143743.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080e82168c79---vowenafegasemoj.pdfIn PDF document text

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