Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f633f29a1f743f1…

MALICIOUS

PDF

62.5 KB Created: 2021-10-05 03:30:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 6d9cea0f44654ad6911eaa407424b1e7 SHA-1: 2f0daedd688348542be82e53eb288083ed9b7bd2 SHA-256: 1f633f29a1f743f1572cfcb4f52db090b9ffa0f9dcd882b4071826d90581be65
124 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, many of which point to disposable hosting or compromised CMS upload directories, indicating a link farm designed to redirect users. ClamAV identified this file as Pdf.Phishing.Trojan, further supporting its malicious nature. The primary function appears to be directing users to external, potentially malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4857

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 https://fzclicks.com/demo/files/editor/file/7300684276.pdf In PDF document text
    • https://costarica4d.com/contents/files/fisamosolovapek.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16149948556770---73544637540.pdfIn PDF document text
    • http://bellezaeimagen.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16158f0c7e88ac---37465460814.pdfIn PDF document text
    • http://www.deco-interieure.com/userfiles/file/41556718249.pdfIn PDF document text
    • http://vetranhtuong.info/luutru/files/wuwevutabamowokop.pdfIn PDF document text
    • http://geofer.eu/userfiles/files/wisawoxidudevutolawebixe.pdfIn PDF document text
    • https://suadienlanhhanoi.net/upload/files/voxojobifukaworupulep.pdfIn PDF document text
    • http://gibkrakow.pl/uploads/files/vajekadepuxufub.pdfIn PDF document text
    • https://kiptep.ru/file/47051486294.pdfIn PDF document text
    • http://kazenergy.kz/wp-content/plugins/formcraft/file-upload/server/content/files/161396adc870b5---kofuxuvi.pdfIn PDF document text
    • http://fuyu.010bi.com/ckfinder/userfiles/files/saserowubujevasawafa.pdfIn PDF document text
    • https://jager-ig.tw/up_photo/file/bikena.pdfIn PDF document text
    • http://bernendorf.ru/userfiles/file/sejekuzutanusaletir.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/cfc830e231426b0daf72e2e0382c4072/jovopapesavafeler.pdfIn PDF document text
    • https://maintogelonline2.com/contents/files/xununuvusig.pdfIn PDF document text
    • http://bdsps.org/slbdavbatala/userfiles/file/79754358598.pdfIn PDF document text
    • http://kajo-frings.de/userfiles/file/sugusanukezapefafutibevov.pdfIn PDF document text
    • https://behbehaniprojects.com/uploads/files/jumediteforokuxiwilaka.pdfIn PDF document text
    • http://ezclasssites.com/var/wwww/dev-ezclasssites-com/data/files/vevujugufedumev.pdfIn PDF document text
    • http://trungnguyenjsc.vn/uploads/image/files/jirovebuzaf.pdfIn PDF document text
    • http://djapm.com/userfiles/file/vogumaz.pdfIn PDF document text
    • http://riviera.az/userfiles/file/woganizugotewij.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=the+ace+family+new+babyPDF link annotation

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