Malicious PDF — malware analysis report

Static analysis result for SHA-256 6760bf1bd3f06859…

MALICIOUS

PDF

127.7 KB Created: 2021-09-07 17:18:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: abb320c18cc9702ded15a89c884d3f14 SHA-1: 31a6f52138a2f277addd9b2859264afc4e4a65dd SHA-256: 6760bf1bd3f06859774278469831907652d48539c113f4759e639eaedcf03b07
154 Risk Score

Malware Insights

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

The PDF file contains a link farm directing users to multiple external URLs, many of which are hosted on compromised websites. The ClamAV detection and ML classifier indicate malicious intent, likely for phishing or distributing further malware. The presence of external links and the nature of the hosting suggest an attempt to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6999

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://vsetinrally.cz/userfiles/file/39159416748.pdf In PDF document text
    • http://tencanpowder.com/d/files/35858490203.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9434f6aae0---bijalupimosupe.pdfIn PDF document text
    • https://elminhaj.org/userfiles/file/78693407764.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160a96e39098b0---nelofukawuso.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/7a126321bbcf90e25267203b42c95974/7483262057.pdfIn PDF document text
    • https://path.mn/userfiles/files/xiteza.pdfIn PDF document text
    • http://ankaser.com/userfiles/file/gotamexaxiluzutizo.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/3fa22c3ab070e5909e18aee3ed4d57ad/39185246402.pdfIn PDF document text
    • https://haysalon.com/public_html/userfiles/file/97254294133.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160916dd892be6---wubuketu.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/06dc8965502bff19de555e6d2d41c81a/62830551325.pdfIn PDF document text
    • http://vimbark.sk/editor_uploads/files/838195932.pdfIn PDF document text
    • https://digireg.sk/upload/25191131195.pdfIn PDF document text
    • http://soft-pro.hr/upload/datoteke/gumakogemigomewigufineja.pdfIn PDF document text
    • http://springbook.no/files/85843623270.pdfIn PDF document text
    • http://ps-chiptuning.hu/userfiles/files/terujixobezugojirot.pdfIn PDF document text
    • http://tremonttemplemacon.com/clients/862779/File/80775025489.pdfIn PDF document text
    • https://lastcallslc.com/wp-content/plugins/super-forms/uploads/php/files/1b9af4a00efd45b1e7320538d56b90fd/11280425421.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/b6jg9uubabbihv4bhjk49r5q9r/31866277099.pdfIn PDF document text
    • https://sikahaiphong.com/images/news/files/kotavax.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160849858ea49e---tupiraledutikakenijutake.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=dalai+lama+teachings+pdfPDF link annotation

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