Malicious PDF — malware analysis report

Static analysis result for SHA-256 905828ef71161ae9…

MALICIOUS

PDF

42.7 KB Created: 2021-09-21 22:22:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 3cdea03225be74a8bb63ae4cd643ef00 SHA-1: 9a361d72ce068ff6017c3092362748287cf228d4 SHA-256: 905828ef71161ae9716ff8cba8cecb11edeb8faefc51376ce0b1c1cc19ad71f2
124 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, a technique often used for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to a phishing campaign or malware delivery. The heuristic PDF_SEO_DISPOSABLE_LINK_FARM specifically highlights the use of a link farm on disposable hosting, reinforcing the phishing or malware distribution pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7479

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 http://cwesp.biz/upload/file/vonigab.pdf In PDF document text
    • http://studiobaldizzone.com/userfiles/files/wipavadasisavuxizixe.pdfIn PDF document text
    • http://theheavent.com/userfiles/files/27758121432.pdfIn PDF document text
    • http://sromedical.com/file_media/file_image/file/limajevodoxolo.pdfIn PDF document text
    • http://sklepjola.pl/userfiles/file/gosoxemuze.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ecba2bd686---gebezotuzawawilibodewikat.pdfIn PDF document text
    • http://dailymaydemtien.com/userfiles/files/defulonabanepula.pdfIn PDF document text
    • http://bephoangdung.vn/uploads/ckfinder/files/vokusutaz.pdfIn PDF document text
    • https://onutglen.com/caningest/images/file/vorurasigesuwiwaju.pdfIn PDF document text
    • http://cuacuongiare.vn/upload/files/73432625894.pdfIn PDF document text
    • http://crosswaysrecruitment.com/userfiles/file/56769051162.pdfIn PDF document text
    • http://opgzvh.hr/upload/file/72857011604.pdfIn PDF document text
    • http://testsitehq.com/ckeditor-ckfinder-integration/uploads/files/xafesugurok.pdfIn PDF document text
    • http://uptownherndon.com/uploads/files/zixixuposobomokejakor.pdfIn PDF document text
    • https://alubiasdetolosa.com/files/galeria/files/14816776398.pdfIn PDF document text
    • https://weilaimachinery.com/userfiles/files/kopikinodotirenu.pdfIn PDF document text
    • http://nepalbestcargo.com/userfiles/file/sebojirasa.pdfIn PDF document text
    • http://miryangpension.com/FileData/ckfinder/files/20210917_7F2BBD8EE2A5B4C8.pdfIn PDF document text
    • https://amgaa.org/temp/files/83749044051.pdfIn PDF document text
    • http://cansuyu.org/resimler/files/55786586774.pdfIn PDF document text
    • http://abwhopewell.com/uploads/files/29264214685.pdfIn PDF document text
    • https://numen-wow.com/userfiles/cloud/files/34766792441.pdfIn PDF document text
    • https://milorem-service.ru/userfiles/file/lakiwafud.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=atualizar+android+tablet+samsung+gt+p7500PDF link annotation

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