Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fc54aff34bb147a…

MALICIOUS

PDF

55.6 KB Created: 2021-06-06 00:45:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4623cdbcdc571ef14d033f4816b0c823 SHA-1: 65bb3501adcbd3605820a0be7e06268ae9a04d02 SHA-256: 0fc54aff34bb147a57f439b898bc18f4f20b1df69af9e72704fdb3e2c13a6973
154 Risk Score

Malware Insights

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

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 disposable hosting, suggesting it functions as a link farm or phishing lure. The URLs are designed to redirect users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6640

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://allytemp.ru/uplcv?utm_term=how+do+i+set+my+g+shock+5081 PDF link annotation
    • https://www.americanapi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096fb4452366---nunugafa.pdfIn PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/160b7ce27714ea---53206093831.pdfIn PDF document text
    • https://pointsourcegroup.com/wp-content/plugins/super-forms/uploads/php/files/cef18fb439fca55b7ac34bd4f806fc20/64099889102.pdfIn PDF document text
    • https://www.hediyevideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae0401aac38---80945091085.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cbd11adeba---48890748899.pdfIn PDF document text
    • https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/c12f3c4017577074c4d3759bded2ea87/48867670823.pdfIn PDF document text
    • http://fouladsazanco.com/Upload/file/3221202101.pdfIn PDF document text
    • http://bwc.lt/i/48188407809.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/1608f221426640---jamapabunomirapeme.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/e8ab33qmpee5l807q74fieuriq/83712511919.pdfIn PDF document text
    • http://herculesestateplanning.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/muvusaseleno.pdfIn PDF document text
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/adbb0ae84595521f2390d887dd7680cf/linamopovonoxataganefugo.pdfIn PDF document text
    • http://msci.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/160a4912ad5d3a---5713944745.pdfIn PDF document text
    • http://hoangle.vn/uploads/userfiles/file/25622750347.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a554d751658---remojem.pdfIn PDF document text

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