Malicious PDF — malware analysis report

Static analysis result for SHA-256 0728678ee4c07527…

MALICIOUS

PDF

73.4 KB Created: 2021-09-06 01:57:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: b885caa9c92d9712e39855760922067e SHA-1: 4bd5a8194013121da54d5857f02d9c196d4dedae SHA-256: 0728678ee4c0752791fbec477566900136442e727a9812ad67832010eb98cc3d
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains numerous links to external websites, many of which are hosted on compromised CMS uploads or disposable domains, suggesting a link farm designed to redirect users to malicious content. No scripts were extracted, but the PDF structure and embedded links strongly suggest an attempt to lead the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8554

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://club-integra.ru/userfiles/file/wisosekalokokawizobemide.pdf In PDF document text
    • http://reiki-roots.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1610f0e14c37bd---vozavojorujatisedo.pdfIn PDF document text
    • http://franzoesischebulldoggen.eu/userfiles/file/tebatonoverelujurubovox.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/7aa882e0e36b5186f4d1bd5c2e34b19f/84986081494.pdfIn PDF document text
    • https://spa-salon.ru/ckfinder/userfiles/files/38384272338.pdfIn PDF document text
    • http://tano-cable.com/d/files/dufujipexofopuxajadenepi.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160878b18989ab---75952294857.pdfIn PDF document text
    • https://jokerprod.net/userfiles/file/88437449586.pdfIn PDF document text
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b98f72b98a5---wevukawivuw.pdfIn PDF document text
    • https://www.freshstartdigitalmarketing.com/wp-content/plugins/super-forms/uploads/php/files/d964f7a42308c7b163c95859b7eeaf51/33395267316.pdfIn PDF document text
    • https://debcopharma.com/userfiles/file/8161869442.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/f1670b4f1119d3a2b1bd2b365d5bbf2f/59280591227.pdfIn PDF document text
    • https://mailing.crpm.ch/ck/ckfinder/userfiles/files/wakutomumuriguxulize.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/56aa7c7163d7fcbd519f154398305622/totefefekewon.pdfIn PDF document text
    • https://detectiveoffice.net/userfiles/file/94704280619.pdfIn PDF document text
    • http://efuturesthai.com/uploads/file/37922216864.pdfIn PDF document text
    • http://nzozkrowodrza.pl/uploads/editor/file/govodemora.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/3c77993bb2333825c6dc04e812228270/kejagisowidiboriposub.pdfIn PDF document text
    • http://bagumul.com/file_upload/spaw_upload/file/20210511191737.pdfIn PDF document text
    • http://samuiluxurytravel.com/Uploads/file/65554019853.pdfIn PDF document text
    • http://csc020.com/userfiles/file/20210622210158_k2nv3o.pdfIn PDF document text
    • http://citescolairedeledit.com/include/file/35668076573.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16084d00a91517---82453783430.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=limitations+of+cardinal+utility+theory+pdfPDF link annotation

Open this report in the interactive analyzer, or submit your own file for analysis.