Malicious PDF — malware analysis report

Static analysis result for SHA-256 59862a65345fb838…

MALICIOUS

PDF

48.0 KB Created: 2021-09-22 21:48:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 4d20358ff13fccb13e1f4be2b07bd068 SHA-1: e71fc50bd2656ab67c59f881b3b87e56b20a097d SHA-256: 59862a65345fb83833e03f338d2616b369ddad7ec32d17ab19c88a7b91f09d4e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on disposable domains or compromised CMS uploads, suggesting a link farm for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7493

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 https://pixomot.ru/uplcv?utm_term=sex+game+apk+download PDF link annotation
    • http://aaaexpressac.com/userfiles/file/sabevanodukoliganoju.pdfIn PDF document text
    • https://ixiu-23.com/uploads/files/202109151538417512.pdfIn PDF document text
    • http://www.village-gaulois.org/gestion/ckfinder/userfiles/files/69148123750.pdfIn PDF document text
    • https://rtvpuls.com/ckfinder/userfiles/files/51317694084.pdfIn PDF document text
    • http://doo-san.com/userfiles/file/20210922172850.pdfIn PDF document text
    • http://a-aqua.fr/ressource/site-image/files/72561084154.pdfIn PDF document text
    • https://phoenixturkey.com/upload/ckfinder/files/fowavuf.pdfIn PDF document text
    • http://fitviewer.info/files/file/98917429968.pdfIn PDF document text
    • http://benhvienlaptop.biz/userfiles/file/bimajarimarem.pdfIn PDF document text
    • https://danfort.lv/userfiles/file/vasopovaderi.pdfIn PDF document text
    • http://erbamedica.org/userfiles/files/ketojusebanav.pdfIn PDF document text
    • https://yourwebcenter.com/files/file/1418751330.pdfIn PDF document text
    • http://ingpiazza.eu/userfiles/files/pilufofixowisiza.pdfIn PDF document text
    • http://aucontecnologia.com/userfiles/files/69291774006.pdfIn PDF document text
    • https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/c001ce7217f72bca191ee32797790500/zefuzuva.pdfIn PDF document text
    • https://northwestconvention.cz/data/files/mofeludebedunifazel.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/depaw.pdfIn PDF document text
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e5c214b2a1---91845494734.pdfIn PDF document text
    • https://canoe.ro/Extras/ckfinder/userfiles/files/95143595952.pdfIn PDF document text
    • https://www.ccs-corporation.com/ckfinder/userfiles/files/81035337115.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/ef5c39334f17ac71519ad7ee00c18b95/gawutomagota.pdfIn PDF document text
    • http://komputerzagrosze.pl/userfiles/file/tebedejetadimuzazewerek.pdfIn PDF document text
    • https://kenkochaya.com/user_data/ckfinder/files/82780285498.pdfIn PDF document text
    • https://kueapem.com/contents/files/nodemekixipiwiwume.pdfIn PDF document text
    • http://friulanamarmi.it/images/file/81865395418.pdfIn PDF document text

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