Malicious PDF — malware analysis report

Static analysis result for SHA-256 45b480218ec4f894…

MALICIOUS

PDF

47.7 KB Created: 2021-09-25 03:02:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: e0318e6aa368dc49c0d4c7ea7bf0394d SHA-1: 8348331e00645362bc87a4c688f036be0ff96f0d SHA-256: 45b480218ec4f894ebec3011e8e7366a93812875ad7a26ae0f671bc3fe6c15a6
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm directing to numerous external URLs, with several hosted on compromised CMS upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. No scripts were extracted, but the structure and URL patterns are consistent with malicious PDF lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7709

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://barrierball.cl/ckfinder/userfiles/files/fimawemavidoluxewuve.pdf In PDF document text
    • https://ahreco.com/uploads/news_file/36187274271.pdfIn PDF document text
    • https://rippa.pt/files/file/ritesenunan.pdfIn PDF document text
    • https://vibingvibes.com/userfiles/files/80910627388.pdfIn PDF document text
    • https://atlantidegattico.it/file/somemaxajujuwut.pdfIn PDF document text
    • http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/81174230983.pdfIn PDF document text
    • https://alpasol.e-giant.net/upload/files/tagizol.pdfIn PDF document text
    • https://latework.cz/soubory/jamadamiruxi.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/1a019f9170b6a54d6cb4c2cf44d75cf6/vipaxisisenujogolusogid.pdfIn PDF document text
    • http://xn--12cfu9bc1efac9a9azfdsb7b9d1f0j.net/ckfinder/userfiles/files/71739170134.pdfIn PDF document text
    • http://pcccphucvinh.com/upload/files/46316570974.pdfIn PDF document text
    • http://vaness-sens.fr/ckfinder/userfiles/files/zagowuruxeluxud.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/161302cc33b879---29842079094.pdfIn PDF document text
    • http://hkbroadwin.com/userfiles/58492071494.pdfIn PDF document text
    • https://kujainspectors.com/candyticket/uploads/page_images/files/93689106919.pdfIn PDF document text
    • http://z-sinpro.com/upload/files/36570029687.pdfIn PDF document text
    • https://orsam.org.tr/paketler/ckfinder/dosyalar/files/tewejigupevibenonuseno.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/161494ab7bd03d---52613954642.pdfIn PDF document text
    • https://gauravkankariya.com/wp-content/plugins/super-forms/uploads/php/files/666c30fc78ab472aaf9b57c3437f9951/97852233479.pdfIn PDF document text
    • http://tykhchem.com/upload/files/44237853555.pdfIn PDF document text
    • http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614d6367410ba---vomonamarapuvep.pdfIn PDF document text
    • http://porpora.group/imagenes/imagenes_contenidos///30775902372.pdfIn PDF document text
    • http://antropolog.ru/userfiles/file/39952653418.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/161388a79f4030---widis.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=download+video+mp4+juicePDF link annotation

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