Malicious PDF — malware analysis report

Static analysis result for SHA-256 6192bf99f994f523…

MALICIOUS

PDF

63.7 KB Created: 2021-07-19 15:26:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 36e08feea3db8d15930a36e23d044b3a SHA-1: 19396d2a58f84144efe8cf6fc24553d567442bf8 SHA-256: 6192bf99f994f52355e71c38d78afc9ccdcfe4ebc2c9aa4447ecceefb5f3a409
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a link farm pointing to multiple disposable hosting domains, a common technique for phishing or malware distribution. The ClamAV detection and ML classifier further indicate malicious intent. The presence of numerous links to compromised CMS upload storage suggests an attempt to disguise malicious content as legitimate files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5435

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://elektrostroy.kz/ckfinder/userfiles/files/dilozazowegagigexo.pdf In PDF document text
    • http://aaaexpressac.com/userfiles/file/34068190924.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/4vht3frle4d0eshbr0crijae41/42260577871.pdfIn PDF document text
    • http://tsradviseurs.nl/mailing/images/photo/file/wofimizojekisiroxejanes.pdfIn PDF document text
    • http://www.urbanwaterways.info/files/luzizeledifiziropupo.pdfIn PDF document text
    • http://takeacode.eu/user/d41d8cd98f00b204e9800998ecf8427e/file/34282328047.pdfIn PDF document text
    • http://goodslib.com/userfiles/files/duxigumewuziwibebare.pdfIn PDF document text
    • https://fleuriste79.fr/ckfinder/userfiles/files/joridudilunudatarodaku.pdfIn PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b13e8929af6---lavogejawakirabipam.pdfIn PDF document text
    • http://www.bash.cl/media/file/82645256035.pdfIn PDF document text
    • http://asirius.su/wp-content/plugins/super-forms/uploads/php/files/b78a164336a52d459778b8850bae3384/nixaferukape.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/4cc2f824bd517baa0dccedb7b5ae3347/12261325713.pdfIn PDF document text
    • http://ypdtools.com/ckfinder/images_store/files/78620264219.pdfIn PDF document text
    • https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/d7ca3128602a1462711a1f173681e483/17726583817.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/488a92a3f8f77c8c125fedbda408688f/sazedusezowamezolinizuro.pdfIn PDF document text
    • https://ymy-tea.tw/upload/files/4450218049.pdfIn PDF document text
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/6a9sfdrtnq1earf91r6fecokcp/pozigifepenas.pdfIn PDF document text
    • http://hoitruyengiaocodocvietnam.com/uploads/image/files/3146186491.pdfIn PDF document text
    • http://lookkorea.net/userfiles/file/72189081452.pdfIn PDF document text
    • http://ms-beauty.com/ckfinder/userfiles/files/zoxipenixivodulox.pdfIn PDF document text
    • https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/a986e7c81dc87f18c10b034a2f1e7502/90464175769.pdfIn PDF document text
    • http://oodow.cn/upload/file/210623115555103654mz1een262sun.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/6c9f9dbb073a3702710e12d15618f2eb/33727091716.pdfIn PDF document text
    • https://finestblogger.de/wp-content/plugins/super-forms/uploads/php/files/elt4h8tk7tpd9q5u110f152aqp/22287958517.pdfIn PDF document text
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/2be2568230bc938d66ea1aa9183918c5/63221265850.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=hay+fever+causePDF link annotation

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