Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5e060b947c35638…

MALICIOUS

PDF

74.0 KB Created: 2021-09-16 01:59:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 41f036e3e3b70ddc3d363e54bc199032 SHA-1: e742aeddf4cda42d40fef6b7b8396c94def92877 SHA-256: d5e060b947c35638dcde02c2e7682c8e724f674dd8a294daaaceaac7e0cd8e1f
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected by ClamAV as Pdf.Phishing.Trojan. The PDF contains numerous embedded URLs, many pointing to domains that appear to be compromised WordPress installations or disposable hosting. These links likely serve as a lure to redirect users to phishing sites or download further malicious content. No scripts were extracted, but the PDF structure and URL patterns are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4692

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://infrive.ru/uplcv?utm_term=the+square+root+of+x PDF link annotation
    • http://www.iso-clean.fr/wp-content/plugins/formcraft/file-upload/server/content/files/161335ddcec6a9---ribimirunosavoponulu.pdfIn PDF document text
    • http://hvezda-pardubice.cz/files/file/61250937903.pdfIn PDF document text
    • https://csp-pub.com/stockages/files/88384437125.pdfIn PDF document text
    • http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161316c8210ad3---8569980227.pdfIn PDF document text
    • https://walterchiropracticclinic.com/home/walter/public_html/ckfinder/userfiles/files/labilenavovudivoti.pdfIn PDF document text
    • https://grafconsulting.pl/Upload/file/geguwusozifid.pdfIn PDF document text
    • http://rem-proekt.com/f/file/7676986239.pdfIn PDF document text
    • https://www.la-providence-ehpad.fr/ckfinder/userfiles/files/xibagukibobekotilud.pdfIn PDF document text
    • https://gtnet-engine.com/ckfinder/userfiles/files/tekepiruwizixam.pdfIn PDF document text
    • http://hongdacable.com/d/files/41497792823.pdfIn PDF document text
    • http://marketypik.pl/zdjecia/fck/file/42495052479.pdfIn PDF document text
    • https://webmenuplus.com/images/file/napoxawesulutad.pdfIn PDF document text
    • https://signos.larrialdiak.es/files/galeria/files/fitezepim.pdfIn PDF document text
    • https://cqc-material.com/app/webroot/userfiles/files/memekiketizokarati.pdfIn PDF document text
    • http://studiopassarotti.it/userfiles/files/wemituvuf.pdfIn PDF document text
    • https://fjordancv.info/wp-content/plugins/super-forms/uploads/php/files/438eb86d5ca4b1c827c4e763826596ba/62665059487.pdfIn PDF document text
    • http://mprime.net/ckfinder/userfiles/files/kujuv.pdfIn PDF document text
    • http://sbnjl.com/userfiles/files/xukedudaxojagoxo.pdfIn PDF document text
    • http://moonlightmontessori.com/upload/files/46555635809.pdfIn PDF document text
    • https://maharajganjtimes.com/assets/ckfinder/core/connector/php/uploads/files/46857481054.pdfIn PDF document text
    • https://mysmartedu.com/uploadimages/files/49696966270.pdfIn PDF document text
    • http://angelofthewinds.net/ckfinder/userfiles/files/gekemex.pdfIn PDF document text
    • https://accounting789.com/ThImg/file/giganibijutemu.pdfIn PDF document text

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