Malicious PDF — malware analysis report

Static analysis result for SHA-256 33b0c2bb38d4310d…

MALICIOUS

PDF

46.3 KB Created: 2021-09-16 16:47:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 0f4ebebcab7c0a71bef9c7dc42360702 SHA-1: 12e6243ddb549a934cd78bc6071b88cc7cde2e2c SHA-256: 33b0c2bb38d4310da4ac252985c09b1375afd12553cc505900874cea7b59c814
154 Risk Score

Malware Insights

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

The PDF contains a link farm pointing to numerous external PDF files hosted on various domains, some of which appear to be compromised CMS uploads or disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or SEO poisoning to lure users to malicious content. No scripts were extracted, and the document body was unreadable binary data.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7111

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://hmondo.com/userData/board/file/79870103394.pdf In PDF document text
    • http://compsult.net/userfiles/file/57836660815.pdfIn PDF document text
    • http://www.facyt.com.ar/ckfinder/userfiles/files/49219593132.pdfIn PDF document text
    • https://tspinstruments.com/cache/fck_files/file/86159116339.pdfIn PDF document text
    • http://st-communications.com/ckfinder/userfiles/files/28158809166.pdfIn PDF document text
    • https://zlato-stribro-investice.com/upload/files/52649473276.pdfIn PDF document text
    • http://drapikowski.pl/uploaded/fck_files/file/fawodeluwelizanodetipuguf.pdfIn PDF document text
    • https://penzion-palice.cz/content/xifegofixadixinekimabafug.pdfIn PDF document text
    • http://sirindhorn.net/upload/File/16694638085.pdfIn PDF document text
    • http://xn--eyt274i.com/upload/files/97737209494.pdfIn PDF document text
    • http://clinicaveterinariabilancino.it/userfiles/files/sozanepunusajuzumuxe.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/1614153c790471---nadalalirexobizobovuge.pdfIn PDF document text
    • http://xetaihyundai.net/upload/files/bozuditulebupowu.pdfIn PDF document text
    • https://granitabrasive.ro/editor_up/48802346199.pdfIn PDF document text
    • http://www.atccs3.it/atccs3/fckeditor/editor/ckfinder/userfiles/files/musubitofejopurotilanugi.pdfIn PDF document text
    • http://www.gieskestukadoors.nl/ckfinder/files/files/xisotejeniwarugaz.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/8c481d4bbb3a9f950c9eca8e238f0077/nibibijifudixizepad.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16138a57a59f25---felugekumagajofapowaka.pdfIn PDF document text
    • https://dhins.com/testingsites/advantage_aviation/assets/media/file/6844398887.pdfIn PDF document text
    • https://hoangvan.vn/wp-content/uploads/files/rukitasodufogelaj.pdfIn PDF document text
    • http://studiosaletta.it/userfiles/files/fosafoxuzadutumataraxij.pdfIn PDF document text
    • https://shopexpert.com/app/webroot/files/userfiles/files/ridarug.pdfIn PDF document text
    • http://www.sparkprototypes.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a3d6523f82---suxakunizivamed.pdfIn PDF document text
    • http://dsacare.com/admin/uploads/file/41966324152.pdfIn PDF document text
    • http://abaj.cz/UserFiles/File/79916747883.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=spiderman+far+from+home+full+movie+onlinePDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.