Malicious PDF — malware analysis report

Static analysis result for SHA-256 16e00ccea8ae8323…

MALICIOUS

PDF

40.4 KB Created: 2021-09-24 09:34:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 72b9452ec4ce4eb9abe548ee9c421039 SHA-1: 7886106692f291558fa9b0871d2651bfd92c8ab6 SHA-256: 16e00ccea8ae8323626182f5e36a2e78cddfcd23be7dcafb22a33869612dc32c
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains numerous links pointing to potentially compromised CMS upload directories and disposable hosting, suggesting an attempt to redirect users to malicious content. The document body is heavily obfuscated, preventing a clear understanding of its specific intent beyond the general phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8834

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 40 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/032cd3pqghotel0gqpfqko3973/zikebunorebisebuxuza.pdf In PDF document text
    • http://dulichtantai.com/files/uploaded/files/karulezezas.pdfIn PDF document text
    • https://clic-essc.ch/ck/ckfinder/userfiles/files/93780842298.pdfIn PDF document text
    • http://lumieye.com/userData/ebizro_board/file/xadosenaroze.pdfIn PDF document text
    • http://another-partner.morefriendship.com/upload/files/15205182731.pdfIn PDF document text
    • https://tpk-m.ru/files/file/depexalegejijajed.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/ac19dec6edd9b802b2618f703ee76b3e/pimuwubapewinepeb.pdfIn PDF document text
    • http://angelascanu.it/uploads/file/runasemutosisuda.pdfIn PDF document text
    • https://osakaav.com/userfiles/files/87126225587.pdfIn PDF document text
    • http://www.impactit.in/ckfinder/userfiles/files/begunajekejatixamobus.pdfIn PDF document text
    • http://www.village-gaulois.org/gestion/ckfinder/userfiles/files/19138940272.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613e355c8bfbb---zikiwifaxixewo.pdfIn PDF document text
    • http://theartofdesign.nl/ckfinder/userfiles/files/ruzaditebolebuvabofoparu.pdfIn PDF document text
    • http://rw-hse-businessconsulting.de/userfiles/file/gugevanozemelituwam.pdfIn PDF document text
    • http://naoshima-habitant.com/images/blog/file/xibakarofaromixi.pdfIn PDF document text
    • http://studioindelicato.com/userfiles/files/35425740720.pdfIn PDF document text
    • https://braintreeclinics.com/app/webroot/img/files/24696239543.pdfIn PDF document text
    • http://www.moyekolodin.com/files/61304365962.pdfIn PDF document text
    • http://siamintertrade.com/file_media/file_image/file/givibiwusiwavakenot.pdfIn PDF document text
    • http://alimentosldm.com/userfiles/file/10795967918.pdfIn PDF document text
    • http://ivelinabozilova.com/userfiles/file/36619073464.pdfIn PDF document text
    • http://antonio-pelella.eu/userfiles/files/mogedizupemidixada.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=funny+cat+gif+downloadPDF link annotation

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