Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffea76ded34e4d81…

MALICIOUS

PDF

57.3 KB Created: 2021-09-08 08:45:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 6dc843db52a357a4c853fbf517a0c23d SHA-1: 7f235aab566a5894e8c536623b86ace4afdaec7c SHA-256: ffea76ded34e4d8112c40ad943ce25f2c2fc55242951befec65b0d3918879996
154 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It functions as a link farm, containing numerous URLs pointing to various domains, some of which appear to be compromised WordPress sites. The presence of 'utm_term' parameters in some URLs suggests an attempt to track user engagement with potentially malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6357

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://pistant.ru/uplcv?utm_term=alta+via+dolomiti+4+pdf PDF link annotation
    • https://bookatowncar.com/userfiles/file/leragowetuvur.pdfIn PDF document text
    • http://nhadatv.com/webroot/img/files/87381961701.pdfIn PDF document text
    • https://www.dogandemir.av.tr/paketler/ckfinder/dosyalar/files/86497266491.pdfIn PDF document text
    • http://avondale61.com/clients/e/e2/e25739fb73bf6f2fbed92e75d980d6c5/File/fikuj.pdfIn PDF document text
    • http://xn--80aatg4aaaddkhfhbf3evf.xn--p1ai/ckfinder/userfiles/files/30212230374.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083fa4faeed8---24550935979.pdfIn PDF document text
    • http://tc-antey.ru/uploads/files/45435161455.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/4sun9ovfjbptv06dioc6afd3i3/ziwez.pdfIn PDF document text
    • https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/4e44e68f158e74daf63d54630cf942b3/83907846558.pdfIn PDF document text
    • https://arerp.kr/data/file///bedozefojunibetezopokuza.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608478efadd2a---67347997964.pdfIn PDF document text
    • https://www.albispanaderia.com/wp-content/plugins/super-forms/uploads/php/files/0b7b9a5e0a142f0ec896c847f357ade6/80360369772.pdfIn PDF document text
    • https://innovativallatgyogyszer.hu/fileok/file/sedemuwokijun.pdfIn PDF document text
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160ee308e44a4c---forukopibukuwufiwanin.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/c8d105de6deb1d23f98d07de59d73661/25959653482.pdfIn PDF document text
    • https://arvikabc.com/images/uploadedimages/file/zuxira.pdfIn PDF document text
    • https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/dabc129461ece047945e4574e72df2a0/21111178773.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/18646290505.pdfIn PDF document text
    • http://onlineexpert.in/userfiles/file/gebarenokugixivonafo.pdfIn PDF document text
    • https://jjpremiers.com/files/6274013129.pdfIn PDF document text
    • http://www.haztartasigepszakuzlet.hu/pics/file/19205841739.pdfIn PDF document text

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