Malicious PDF — malware analysis report

Static analysis result for SHA-256 79a2758a15089d77…

MALICIOUS

PDF

57.5 KB Created: 2021-09-12 08:27:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: efb6cb2266da954a03d7ad37a154112d SHA-1: a89e18d2dbc4956b1e4fcb8cd06294c7bc335bae SHA-256: 79a2758a15089d77f65bd058b7024541d549a3825bbcc3999ee332b85b3e5461
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains numerous embedded URLs, many of which are associated with link farms and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of external URIs and embedded URLs points towards the T1566.001 (Spearphishing Attachment) technique, as the document likely serves as an attachment in a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://inwebjor.ru/uplcv?utm_term=hidden+valley+road+inside+the+mind+of+an+american+family+pdf PDF link annotation
    • http://dialog-seversk.ru/jsplugins/ckfinder/userfiles/files/10348320300.pdfIn PDF document text
    • https://larustt.com/upload/ckfinder/files/fekine.pdfIn PDF document text
    • http://thanhcongtechtra.com/upload/files/jiwusov.pdfIn PDF document text
    • http://poliinc.com/upload/files/17402117021.pdfIn PDF document text
    • https://jeanmarcrobion.fr/userfiles/file/5386935768.pdfIn PDF document text
    • http://euro-m.si/web/dokumenti/file/tuvixuzojejuwidu.pdfIn PDF document text
    • http://pttaccounting.com/userfiles/files/lexilepitaji.pdfIn PDF document text
    • http://orikon.net/Images_upload/files/fafanaberunomederurajegi.pdfIn PDF document text
    • https://braintreeclinics.com/app/webroot/img/files/zurupemupibew.pdfIn PDF document text
    • http://saxonrt.hu/img/userfiles/files/gaxitoluxigewokebu.pdfIn PDF document text
    • http://playeasypiano.com/resources/fck_images/80713953194.pdfIn PDF document text
    • http://shukokai-voves.fr/userfiles/file/81509880469.pdfIn PDF document text
    • http://jonme.net/ckupload/files/nukubogunobixanusezi.pdfIn PDF document text
    • http://greatnice.club/updatefiles/file/20002023624.pdfIn PDF document text
    • https://chorland-dining.com/webroot/editor-uploads/files/kikivufejuban.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/5cadd0c939036e6501c6eac3d57d117a/sibotugojovogafudulo.pdfIn PDF document text
    • https://minhgianggroup.vn/upload/files/18117925020.pdfIn PDF document text
    • http://incomsistema.ru/ckfinder/userfiles/files/moribinokevojokam.pdfIn PDF document text
    • http://www.lalorraineperdue.com/documents/zobakivovopejovevamuke.pdfIn PDF document text
    • http://youzedu.com/ckimages/files/20210906050542328378.pdfIn PDF document text
    • https://gabinetpro.pl/kosmetyczka/krakow/files/6105683973.pdfIn PDF document text
    • https://peiitw.com/Upload/ckeditor/files/79947668407.pdfIn PDF document text
    • http://urdu-hadith.com/survey/userfiles/files/53455031452.pdfIn PDF document text