Malicious PDF — malware analysis report

Static analysis result for SHA-256 96f0bcc9cd2029fe…

MALICIOUS

PDF

87.6 KB Created: 2021-09-01 05:58:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 0647bf1f8d78cdc3507f8dc40cd16b8e SHA-1: 889a178411d42dfc579b93b0a37fcb0204c8f6af SHA-256: 96f0bcc9cd2029fe40e067eddceea15b6d02ce13d668f9452e289579a0f33307
154 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains numerous links, many pointing to compromised CMS upload storage and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The document body is heavily obfuscated and unreadable, providing no direct content clues, but the heuristics strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9438

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://albesiaboutique.com/files/upload/files/3339888698.pdf In PDF document text
    • http://dmhu.eu/uploads/uplib/file/95128280778.pdfIn PDF document text
    • https://sealand-pptc.com/userfiles/file/duvadupenodiwudi.pdfIn PDF document text
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/20571a048cf0a56469ba0fc92f9fd62d/budavidigazu.pdfIn PDF document text
    • https://www.makathastaliklari.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8bc86a5c2---xabazomilaxatugujalatenob.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160a6466ee6dd0---gofuzovusidogiguzetojefe.pdfIn PDF document text
    • https://www.ideaklinikankara.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a7f08d6d94---3873039512.pdfIn PDF document text
    • http://montpellier-businessplan.com/mbp/upload/images/images/upload/ckfinder/kexiwo.pdfIn PDF document text
    • http://hilltoplancers1975.com/clients/13753/File/39980329580.pdfIn PDF document text
    • http://ifa-astrologie.de/userfiles/file/pupitabofolasufixabigoki.pdfIn PDF document text
    • http://thepducphat.com/upload/files/15011792913.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/16081a1f96d2c4---68626628271.pdfIn PDF document text
    • https://suksesunited.com/contents/files/taligumil.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/64473716172.pdfIn PDF document text
    • https://marblobath.com/app/webroot/img/files/79263510241.pdfIn PDF document text
    • http://akbmodel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a161c22808---wotusotopubakizijomade.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160cb06fcb6b6f---80822709598.pdfIn PDF document text
    • http://huerural.com/uploads/image/files/wiwefofut.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c3e9aac1d---kemapawesamuxebaduwani.pdfIn PDF document text
    • https://biomisszio.hu/tmp/49748683168.pdfIn PDF document text
    • http://beastyenergy.com/userfiles/file/zefurubepanurom.pdfIn PDF document text
    • https://foodvellythailand.com/upload/files/98814757337.pdfIn PDF document text
    • https://drahmetbostanci.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071e56442cbf---puwofipexamefobeti.pdfIn PDF document text
    • http://pronobile.de/catalog/file/biragasexotananol.pdfIn PDF document text
    • http://nsk-nalogov.net/upload/files/nokibuvegosegapab.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=meaning+of+existentialismPDF link annotation

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