Malicious PDF — malware analysis report

Static analysis result for SHA-256 f375d4f00fce2659…

MALICIOUS

PDF

65.1 KB Created: 2021-07-15 14:02:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 67b458d55f3a7dc288a40d44f0e1f9e1 SHA-1: a32834a79fe049502fb53a949ec5a266c7bc0662 SHA-256: f375d4f00fce265906faa7f51febe6e91ad2851b2613c70d78f601c4a0e16346
154 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress upload directories, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the URL structure and heuristic firings point to a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6844

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://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5bc55cbb6d---19122241828.pdf In PDF document text
    • http://poltinik.ru/userfiles/file/fasalokosanibatafeka.pdfIn PDF document text
    • http://bjoybrands.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607877566ff8e---wiruzawunogoxujoga.pdfIn PDF document text
    • https://amrapalispot.com/userfiles/file/18725760790.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160ee791841297---saxavuxutukikimosixofora.pdfIn PDF document text
    • https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/fb73ba74ca82c19f2ba2851524d7f27b/tofamefun.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/16091547cb21dc---wulowugogelej.pdfIn PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d17ef08e83---noduvuzuxezagunav.pdfIn PDF document text
    • http://statsale.com/data/upload/ck/files/12060444670.pdfIn PDF document text
    • http://roocenter.ru/upload/file/josilifumit.pdfIn PDF document text
    • https://davebakeragency.com/wp-content/plugins/super-forms/uploads/php/files/b8552b2db6c0f1a26acb8ce73bb42d9d/wofojizamupigu.pdfIn PDF document text
    • http://grandinhr.eu/images/user/file/jixifatomemev.pdfIn PDF document text
    • http://zonweringbelgie.eu/ckfinder/userfiles/files/vuripajojozafeletimazox.pdfIn PDF document text
    • https://chief-moving.com/editor_upload/file/digutevifafasikuvukugod.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/86c554db4aa7ff7ac2f9db4ef8d08b1f/bugimonarukom.pdfIn PDF document text
    • https://belgradenightlife.info/wp-content/plugins/super-forms/uploads/php/files/0oghu0r1vjl7lqvb1ki0imp81f/6636256142.pdfIn PDF document text
    • http://taxicityplus.ru/userfiles/file/wovadosupuxarajoxoxekik.pdfIn PDF document text
    • https://amitadevnani.com/userfiles/file/woxafofovavilosepeten.pdfIn PDF document text
    • https://kimtuong.vn/isc/public/files/fckupload/file/dujorafuzabivizixomuniwul.pdfIn PDF document text
    • https://giverny-bkk.com/upload/files/73989790398.pdfIn PDF document text
    • http://studiomuraca.eu/userfiles/files/46440985188.pdfIn PDF document text
    • http://www.kzhep.in.ua/wp-content/plugins/super-forms/uploads/php/files/1vufld1g02v3q3hse3147245o3/90673965823.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=md+age+of+consentPDF link annotation

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