Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb037edd149144ed…

MALICIOUS

PDF

78.1 KB Created: 2021-09-06 07:25:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 5b554a703e8dfd93d92431e5eead5a87 SHA-1: a6f13cc276b5c3e81c6031e899051594ec540450 SHA-256: bb037edd149144edd45bb845d250d29012f096cb22a68613a077209a0168e7e3
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 functions as a link farm, containing numerous embedded URLs that point to compromised websites, some of which are WordPress installations used for file uploads. The primary purpose appears to be directing users to potentially malicious or phishing content hosted on these compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6584

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 http://martonaroniskola.net/userfiles/file/65053880358.pdf In PDF document text
    • http://www.molinoag.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082d2261ee8b---detudefekufoti.pdfIn PDF document text
    • http://turhantur.com/turhantur/files/zobuvikezazesunikewe.pdfIn PDF document text
    • http://sea-cruise.ru/ckfinder/userfiles/files/49147438212.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/d3792c95df7fcce405541c5f03dc70d8/86928574561.pdfIn PDF document text
    • https://carea2plus.com/wp-content/plugins/super-forms/uploads/php/files/a3a4b174db225fb04f753b43e91d65c4/69646971961.pdfIn PDF document text
    • https://elpollopaulino.com/cenavarra_userfiles/files/39511816030.pdfIn PDF document text
    • https://bursaceviritercume.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bbf7a9e626---tutetokot.pdfIn PDF document text
    • https://beruanglucu.com/contents//files/49727730658.pdfIn PDF document text
    • https://ketdoanbus.com/webroot/img/files/dolakego.pdfIn PDF document text
    • http://maketmaster.ru/admin/ckfinder/userfiles/files/15335517935.pdfIn PDF document text
    • http://mazdooradda.com/userfiles/file/ropedaparax.pdfIn PDF document text
    • http://shreyaghoshal.com/konadnew/userfiles/file/dosulinuwanopabalidubunat.pdfIn PDF document text
    • http://mofrantech.com/userfiles/file/26064814651.pdfIn PDF document text
    • http://asbazainville.org/userfiles/file/14237450364.pdfIn PDF document text
    • https://ajitcoatings.com/uploads/99292086160.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/16107eaeeae490---nutop.pdfIn PDF document text
    • http://healthywithhart.com/res/file/19458767752.pdfIn PDF document text
    • http://chinalabware.es/d/files/vofaxaxaxirigavitabi.pdfIn PDF document text
    • https://yourwebcenter.com/files/file/24476301674.pdfIn PDF document text
    • http://tachikawa-derma.biz/ckfinder/userfiles/files/69138354498.pdfIn PDF document text
    • https://sarvodayasamaj.uk/upload/files/lasavoxazoxeduxi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=el+noviazgo+catolico+pdfPDF link annotation

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