Malicious PDF — malware analysis report

Static analysis result for SHA-256 03d9563fa5a053d7…

MALICIOUS

PDF

119.0 KB Created: 2021-07-18 15:12:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: af647090941b9abcff79c3885d75a96c SHA-1: ce6e3056718b1ea0e07a2cb36230fa34bf6c4fd7 SHA-256: 03d9563fa5a053d7b3ca758a731109491b8f8889cd7fc690bada201439e9c15a
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample contains embedded JavaScript, a common technique for executing malicious code within PDFs. It also features a link farm pointing to compromised WordPress upload directories, suggesting an attempt to host and distribute malicious files or redirect users to phishing sites. ClamAV detection further confirms its malicious nature, identifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4594

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/pfn43ta6j1m450d2v8t8t0rg01/59711205119.pdf In PDF document text
    • https://seikico.net/img-tym/files/didegaxitibelasizivepavip.pdfIn PDF document text
    • http://timelessmebel.ru/wp-content/plugins/super-forms/uploads/php/files/02cbda22372f2721cf7f0fca8fdd4748/fokamotivok.pdfIn PDF document text
    • https://hse.tw/upload/file/67778428711.pdfIn PDF document text
    • http://eschool365.in/js/admin/uploadfiles/file/14548616990.pdfIn PDF document text
    • http://uitetenindex.nl/images/uploads/jazozazib.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/595960912c0587c55b3f3169490f60dc/3058996755.pdfIn PDF document text
    • https://marksiegeldds.com/wp-content/plugins/super-forms/uploads/php/files/35ef626edd14f1c2ccf2dbd88c07839a/6687725902.pdfIn PDF document text
    • https://www.gs-gleichmann.de/wp-content/plugins/formcraft/file-upload/server/content/files/16072169b36fad---96031628020.pdfIn PDF document text
    • http://xahscw.com/userfiles/file/naxewajaweneziworodareres.pdfIn PDF document text
    • https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/i3v52ttjvcivnqfam3o2vvspg6/43572056810.pdfIn PDF document text
    • http://bmhs1963.com/clients/7/72/7286fd37811b7a5dece6e69924e4d5ab/File/fixelogipexalunavilazo.pdfIn PDF document text
    • https://divorcioconsensual.com.br/wp-content/plugins/super-forms/uploads/php/files/7037fdcd22c669d806ebab23dbc4f9a8/xomavejojulefako.pdfIn PDF document text
    • https://maviet.vn/upload/files/jononuzotakokelewavufak.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ad87a45374---72589326602.pdfIn PDF document text
    • https://www.yoursurveysurveyors.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160c11872c24e6---30541203671.pdfIn PDF document text
    • https://justbuymeds.net/userfiles/file/fupugutox.pdfIn PDF document text
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/20783abec37de1f10bc698bccace3c31/37217699333.pdfIn PDF document text
    • http://aceonlinementors.com/userfiles/file/nawul.pdfIn PDF document text
    • https://ahreco.com/uploads/news_file/24386510507.pdfIn PDF document text
    • https://noddy.nu/images/file/86532095050.pdfIn PDF document text
    • https://him-home.ru/wp-content/plugins/super-forms/uploads/php/files/63661955d566cb13fe8b4c98a4801b20/xegugejit.pdfIn PDF document text
    • http://accessprecision.com/userfiles/file/78315879364.pdfIn PDF document text
    • https://forex-robo.org/wp-content/plugins/super-forms/uploads/php/files/d64335faa2a1da65f9058f265d754d02/miludutasor.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=highest+tv+viewing+figures+everPDF link annotation

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