Malicious PDF — malware analysis report

Static analysis result for SHA-256 698c3b596b4c12ab…

MALICIOUS

PDF

62.3 KB Created: 2021-08-20 06:06:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 780944400cabddb9fc16c071b77f4e01 SHA-1: 48ef818cd0c039f49c28f6c334451d3efcb4bbbf SHA-256: 698c3b596b4c12ab557dfca1ba067549993560a47be35c34f8e2b3cd6423662f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous embedded URLs, many pointing to compromised WordPress sites, and one specifically linked to a phishing campaign. The file's structure suggests it acts as a link farm, likely intended to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9674

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://smidgel.ru/uplcv?utm_term=how+to+introduce+yourself+to+client+in+mail PDF link annotation
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1611c0e50f1ac1---dozukabolekufobizaso.pdfIn PDF document text
    • https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/5beb017277482afcd192a875f2b4dfef/81896286260.pdfIn PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609a89e817865---dikozuvifuzitumufuw.pdfIn PDF document text
    • http://alnoorcity.com/userfiles/file/26636182610.pdfIn PDF document text
    • https://lapiadinafelice.it/file/73447041135.pdfIn PDF document text
    • http://navrattan.co/userfiles/file/3793612394.pdfIn PDF document text
    • http://www.opencalgary.org/wp-content/plugins/formcraft/file-upload/server/content/files/160845dd17996d---64994517.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f14eb914fd---61782766736.pdfIn PDF document text
    • http://bertrandetgastineaudesigners.com/userfiles/file/xitesoxulelezise.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/41ktujvc5ng9m01nhqcrh51e8b/46601900717.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160f364e07b1e3---zujaz.pdfIn PDF document text
    • https://mut-zur-veraenderung-hambuch.de/userfiles/file/71029870181.pdfIn PDF document text
    • http://hzbmsj.net/images/upload/File/58449202378.pdfIn PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1608574b028cc0---joputikexanasiw.pdfIn PDF document text
    • http://aylincinarli.com/fckfiles/file/xurixizoxulax.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082db5db7b5f---setevovem.pdfIn PDF document text
    • http://thienlongadv.com/upload/files/13562792439.pdfIn PDF document text
    • http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c354550dda5---jotamojojala.pdfIn PDF document text
    • http://schodylux.pl/userfiles/file/27017638782.pdfIn PDF document text
    • http://thewellmanteam.com/userfiles/files/68366838795.pdfIn PDF document text

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