Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a99bed6dd3f5071…

MALICIOUS

PDF

59.4 KB Created: 2021-07-16 18:13:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 29e9d2786d3c691f3493d104c82e2d04 SHA-1: 2b47f045dc9d4412e4c3fdb63dd0cd7117b37735 SHA-256: 6a99bed6dd3f5071701c1f8c3c8b987eef5e38c812f616ff3a3790fa54db29ed
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links to compromised WordPress upload directories and disposable hosting, suggesting a link farm designed to distribute malware or conduct phishing. The document body is heavily obfuscated, but the presence of external URIs and link farms indicates an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5305

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 http://birdviewjoey.com/webroot/uploads/files/60369444340.pdf In PDF document text
    • https://kes-stv.ru/wp-content/plugins/super-forms/uploads/php/files/ccfe4ce226e8c72af96538575a0366bc/78706255186.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/39e321e178180b3e1bfcbcf9a5dba7f2/64931102404.pdfIn PDF document text
    • http://evpltravel.com/xv_image/file/zenudilaliximewuguvig.pdfIn PDF document text
    • https://aquafilling.com/userfiles/file/72792221194.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/9f64006e33de3cad5ed4e08abd1cb750/fujubovokapemutiragov.pdfIn PDF document text
    • https://vasutaszeneiskola.hu/ckfinder/userfiles/files/pesow.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160987a53bc39c---wirowos.pdfIn PDF document text
    • http://www.ddd-iasi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160913e2a59c4b---zugip.pdfIn PDF document text
    • http://canxetaianhduc.com/images/file/funiwabija.pdfIn PDF document text
    • https://www.ccps.mx/wp-content/plugins/super-forms/uploads/php/files/4bf5515f75a53560b3bb9a161d9de399/65813371711.pdfIn PDF document text
    • https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/2dd7910300d4d18676e9b1edf1d75cf5/1049270704.pdfIn PDF document text
    • http://lifemartrealestateconnect.com/wp-content/plugins/super-forms/uploads/php/files/6ikl7lb82p3seah32olsfsmcu2/79481309589.pdfIn PDF document text
    • https://universal4shipping.net/userfiles/file/94704702408.pdfIn PDF document text
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16080076782af2---56679021513.pdfIn PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/e0744046d865b404bd7e44c46e7867ee/19177717078.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bcc4597f535---45037982547.pdfIn PDF document text
    • http://bortran.com/upload/image/file/20210609025936.pdfIn PDF document text
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/66343d25b3ca2cba42d3c39524219b60/webavipofada.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/1608725dae11d3---godaxewawejapotakad.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/8f91ab472acb01957956d7a22c114cf1/kogejulitejo.pdfIn PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160818513046d6---kewezivanojanovobunewim.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=project+report+on+insurance+as+an+investment+strategy+pdfPDF link annotation
    • http://s292376414.onlinehome.fr/datas/imgmail/file/vofopadake.pdfIn PDF document text

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