Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2e18bb2cb45753e…

MALICIOUS

PDF

47.5 KB Created: 2021-06-09 04:50:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5782975602c1f4f39c1bf6b18b6b7003 SHA-1: 68ed12a599ddcaac1f18b28928740a79af54a017 SHA-256: e2e18bb2cb45753e1517e9408e91fb7710e2dd5e9f6ec7c50a145a3ef7910172
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous links to external websites, many of which are hosted on compromised WordPress installations. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classifier flagging indicates malicious intent. The document body, though heavily obfuscated, suggests a lure related to 'sourceforge pdf editor', likely aiming to trick users into downloading malicious content or visiting phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7205

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://nomylo.ru/uplcv?utm_term=sourceforge+pdf+editor PDF link annotation
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608189d40832a---kewawimigonupunosud.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bd4fee9bbfa---nepexivuzinobabenu.pdfIn PDF document text
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/c4aa661e3786b8b7aee7ae7eb496cf3f/puloribilizorapeboxinumag.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/s31krh32q5c3vp7n919v6kq2eg/tolipitevakuvogagege.pdfIn PDF document text
    • http://ahlhy.com/uploads/file/141929369423.pdfIn PDF document text
    • https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/a9fdd40567d5705505776b80c89a7842/zeravutomej.pdfIn PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/9ee140817883841de08da3b5c990addc/xafekubodopavixikofol.pdfIn PDF document text
    • http://malbreil.com/userfiles/file/71543804864.pdfIn PDF document text
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/904eca3d8f478f7fff92c87d72813743/61381297056.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/78019a9aacb94d54a20f8f84f4cb4431/41835293383.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/p3g7mu8bvggdv2bgalmsldhnuq/34850472245.pdfIn PDF document text
    • https://adepotcustom.com/UploadFiles/file/20210607060903111.pdfIn PDF document text
    • http://birzebbugastpetersfc.com/files/file/91155250753.pdfIn PDF document text
    • https://www.wikiwebagency.it/wp-content/plugins/super-forms/uploads/php/files/dd4f0b0864c8d8fe706713cba2c7426f/56641542735.pdfIn PDF document text
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1607463b799850---sapedewulipedaluw.pdfIn PDF document text
    • http://www.training4thefuture.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607735752b872---fasoxulidale.pdfIn PDF document text

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