Malicious PDF — malware analysis report

Static analysis result for SHA-256 f03be6aef8bfbc97…

MALICIOUS

PDF

67.9 KB Created: 2021-07-13 19:13:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: ea529eb196b7155900a04e920ab171a6 SHA-1: 8f05336ae5c3cbd4d2ef176c41dffa9e3f1fec96 SHA-256: f03be6aef8bfbc97876db98cd4ed3be03dd13e1f4e65d3eb6d5c57e4a6154a3d
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV and exhibits characteristics of a link farm, with numerous URLs pointing to potentially compromised websites or disposable hosting. The presence of external URIs and link farm heuristics suggests an attempt to redirect users to malicious sites, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious intent to lure users to external resources.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4829

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://wastran.ru/uplcv?utm_term=change+pdf+to+excel+free+online PDF link annotation
    • http://wf515345.tw/CKEdit/upload/files/57138402445.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/16095bcf11584e---taketanode.pdfIn PDF document text
    • https://davidfoleyinc.com/userfiles/file/zelufevibakiwowalewebamom.pdfIn PDF document text
    • https://anukulagrotech.com/userfiles/file/sozagixosefu.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1607ff98ff2a0c---turibegerevadasaf.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/21nok2ahuv9d8go7vsid9bdibl/77337744282.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099c75c1ca09---wevetumegimumog.pdfIn PDF document text
    • https://esteticarcare.com/wp-content/plugins/super-forms/uploads/php/files/5d8b105aa570e1d248dd739afebd502b/zojovow.pdfIn PDF document text
    • http://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/160a5d9123134f---durekukawe.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/manadaxunovadoda.pdfIn PDF document text
    • https://www.growxponential.com/wp-content/plugins/super-forms/uploads/php/files/jidv80nfau67q9gqv8qpdu7jte/179965010.pdfIn PDF document text
    • http://kapli74.ru/upload_picture/2733807657.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/a66fc106f9b5b6a1b3d800e22ec79b2f/dajawamasojugijis.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/48381733a5abab74cc2a7a160a0742f3/8454073248.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608b3423737a2---12302949587.pdfIn PDF document text
    • https://manuscripthandler.com/userfiles/file/tasiliwagidufoxezexola.pdfIn PDF document text
    • http://gma.ge/admin/ckeditor/ckfinder/userfiles/files/99096976856.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/0db98f5adb7ca04f2732d7172e62f25a/vizono.pdfIn PDF document text
    • http://sea-cruise.ru/ckfinder/userfiles/files/nokesubopubek.pdfIn PDF document text
    • http://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c687337823a---3131570469.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16088ea434d07f---zodokulenugamuji.pdfIn PDF document text
    • https://k-newsletter.com/ckupload/files/86034235530.pdfIn PDF document text
    • https://ilc.ua/wp-content/plugins/super-forms/uploads/php/files/mnjp5ff50f1fpfref0rq4bo481/4481976906.pdfIn PDF document text
    • http://www.amanuttarakhand.org/ckfinder/userfiles/files/73590911581.pdfIn PDF document text