Malicious PDF — malware analysis report

Static analysis result for SHA-256 365a74db1f456d4f…

MALICIOUS

PDF

69.2 KB Created: 2021-10-12 03:06:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: a6967fb96447f9f468018e94018c3280 SHA-1: f347d1bd083735dc1b6716f0b4b9c085e2df8d6e SHA-256: 365a74db1f456d4f24a6ded8db5a944209b0dff5f36a298691921e233ff86dfd
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm. The ML classifier also flagged the PDF as malicious. While no scripts were directly extracted, the structure and URL patterns suggest an attempt to lure users to potentially malicious sites, possibly for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6691

Heuristics 4

  • 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://alrabbancapital.com/file/files/dobixezatex.pdf In PDF document text
    • https://ksdc.in/userfiles/file/98269960618.pdfIn PDF document text
    • https://cairparavel.ro/app/webroot/files/userfiles/files/sonafujeg.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/3043372215ff4385bdf26d1d0ed96fca/niwofomewolonebovokoxu.pdfIn PDF document text
    • http://eng.sut.ac.th/tce/2016/administrator/ckfinder/userfiles/files/59441128625.pdfIn PDF document text
    • https://coastalstudio.com/images/main/file/30326081819.pdfIn PDF document text
    • http://gamebonda.com/ckupload/files/12857130116.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/161376d6a5ccfc---gurexupabavuviviwetetoka.pdfIn PDF document text
    • http://becskeicsodajo.hu/admin/fck_upload/file/wuridipotoxosi.pdfIn PDF document text
    • https://www.speeddating.lt/speeddating/ckfinder/userfiles/files/zugosomugogitigarenojew.pdfIn PDF document text
    • https://heritagelogs.com/wp-content/plugins/super-forms/uploads/php/files/75b0bvdqanode9auru2kkd23hc/79842010676.pdfIn PDF document text
    • https://transturist.ba/ckeditor/ckfinder/files/files/93263884699.pdfIn PDF document text
    • https://milsagliksen.org/upload/ckfinder/files/16173128287.pdfIn PDF document text
    • https://kominove-centrum.cz/media/files/file/52656291496.pdfIn PDF document text
    • https://gestionarival.com/userfiles/file/98492359316.pdfIn PDF document text
    • http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/16153e54717bc1---24787998176.pdfIn PDF document text
    • http://kingsfinancialconsulting.com/userfiles/file/18245329967.pdfIn PDF document text
    • http://urbancollab.com/userfiles/Proj_Name/files/fadubi.pdfIn PDF document text
    • http://dealershop.es/userfiles/file/70343961892.pdfIn PDF document text
    • https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/8shlqk74f4oiie7oc7cbm3287k/mesusivo.pdfIn PDF document text
    • http://china-miyaco.com/img/file/2021911195722.pdfIn PDF document text
    • https://enerjimakine.com/tsrm1/img/userfiles/file/45379969234.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/16163718f31af9---wetakavos.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/EqozwcbAC44/uplcv?utm_term=how+could+you+quotesPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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