Malicious PDF — malware analysis report

Static analysis result for SHA-256 e799c051e86d5428…

MALICIOUS

PDF

54.7 KB Created: 2021-09-23 06:37:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: c4b83f04df2f48a08ba3ee8e54023a4b SHA-1: a9d620aa3260a26b458137ce1648edc26b33a4dd SHA-256: e799c051e86d5428af405519d3d883570aea4fddcd6af1ba2d81d1aa09fc0649
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded URLs pointing to various domains, many of which are likely disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection further support the malicious nature of the file, classifying it as phishing and malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6241

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://pistant.ru/uplcv?utm_term=find+hidden+pictures+android PDF link annotation
    • https://abctranslink.com/ckfinder/userfiles/files/16466961428.pdfIn PDF document text
    • http://sbairs.com/datas/files/80235441754.pdfIn PDF document text
    • http://hatowo.com/app/webroot/uploads/files/31174889633.pdfIn PDF document text
    • http://www.teeintact.com/admin/fckeditor/editor/filemanager/connectors/php/img/file/30981935933.pdfIn PDF document text
    • https://euronuts2009.ge/files/files/fatotonijiwarixekig.pdfIn PDF document text
    • http://kondicionery-krasnogorsk.ru/upload_picture/file/faloxoneriganozagiwul.pdfIn PDF document text
    • http://hotdeals24x7.com/ci/userfiles/files/16268952641.pdfIn PDF document text
    • http://heichapuzi.com/uploadfile/file/51065450982.pdfIn PDF document text
    • http://dachastyle.com/userfiles/file/votakafoluforugelan.pdfIn PDF document text
    • http://jessie.vn/images/ckeditor/files/71742779566.pdfIn PDF document text
    • https://network-italia.it/file/23111710508.pdfIn PDF document text
    • http://www.abcklima.hu/data/editorfile/71354076418.pdfIn PDF document text
    • https://instalacje-elektryczne.net/ckfinder/userfiles/files/82903613623.pdfIn PDF document text
    • http://www.nandomoraes.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1614072f817395---53158472407.pdfIn PDF document text
    • http://www.sun-green.eu/ckfinder/userfiles/files/58016684510.pdfIn PDF document text
    • https://tempatpasang.com/contents/files/79492247621.pdfIn PDF document text
    • http://remaining-mc.de/userfiles/file/13123115339.pdfIn PDF document text
    • http://gasasosong.com/upload/fckeditor/file/7935169108.pdfIn PDF document text
    • https://daaeportrett.no/upload/file/povewijiwojoxitiju.pdfIn PDF document text
    • http://salonmysliwskirys.pl/userfiles/file/suzogulelirefiliraxud.pdfIn PDF document text
    • http://emachn.com/data/attachment/file/duloregafunenegija.pdfIn PDF document text
    • http://espaciocultivarte.com/ckfinder/userfiles/files/mubabetadexejizolivipi.pdfIn PDF document text
    • http://midesignvn.com/uploads/files/77689615151.pdfIn PDF document text
    • http://promocode.lu/userfiles/files/xiluwumede.pdfIn PDF document text