Malicious PDF — malware analysis report

Static analysis result for SHA-256 04f4abc2b0652bd8…

MALICIOUS

PDF

62.4 KB Created: 2021-06-17 22:27:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: ca2a871f4c841a34ae1bb5fa2f3c9092 SHA-1: d0df37cea8f7d8e924f679d9dd08b1a5faf4160f SHA-256: 04f4abc2b0652bd8a63efe28d02128bf2773971fdd6a1773136692bf3ce53088
154 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised WordPress sites, suggesting a phishing or malware distribution scheme. The presence of multiple distinct hosts and the use of 'utm_term' parameters further support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9522

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.dynasil.com/wp-content/plugins/super-forms/uploads/php/files/56fec5304c0c7d95a445da5f27711fd9/zemovinafenirivuwedosu.pdf In PDF document text
    • http://countrysquirefoods.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c67380c51d---lodojujesudevoxesebugeb.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/b5d7d8c14832c41b744bc4014524c613/gopolewafasuz.pdfIn PDF document text
    • https://2-view.org/home/view/public_html/ckfinder/userfiles/files/56344849458.pdfIn PDF document text
    • https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/3nvabu9cssrujo8g86k6e8gnbs/21945158470.pdfIn PDF document text
    • http://budoprojekt.eu/obrazy/file/xuwemonejelokelage.pdfIn PDF document text
    • http://amctop.com/board_data/editor_img/file/202106040152.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1606cf1b7a8637---96524491489.pdfIn PDF document text
    • https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b97efd048c4---29498591355.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095e44808bcc---10532972955.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080bc1e04c7c---teziditejavefonopid.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/160742d4c8b918---35923034745.pdfIn PDF document text
    • http://omni-links.com/images/blog//file/27271205311.pdfIn PDF document text
    • http://autohondl.cz/userfiles/file/bekikigefoxululunisaze.pdfIn PDF document text
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/16d0cddd0e019123839c4fcf693892ca/5046886118.pdfIn PDF document text
    • http://55pluscommunityspecialist.com/userfiles/files/42262734959.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=all+mobile+company+name+list+in+world+pdfPDF link annotation

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