Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd5bf376d57521f…

MALICIOUS

PDF

84.9 KB Created: 2021-10-27 04:10:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-25
MD5: d6a97983d41cd21b8b9f7b390d8c9a0d SHA-1: 197b6a1d30d67028ba3cc073d981d26c8a92587a SHA-256: 3dd5bf376d57521ff34133e248ee785fe441f0f2e3dfee3a8d8dd007be3608d5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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
  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://manavpublicschool.org/manav/userfiles/file/49544640088.pdf In PDF document text
    • https://ibshospitals.com/userfiles/file/naduwelijubi.pdfIn PDF document text
    • http://avvocatogiuliani.it/userfiles/files/gumizewawamiba.pdfIn PDF document text
    • http://klick-tipp.at/ckfinder/userfiles/publics/files/sowaloluredusejire.pdfIn PDF document text
    • http://www.me.ntou.edu.tw/ckfinder/userfiles/files/20210923_045634.pdfIn PDF document text
    • http://autoneza.cz/UserFiles/File/89665432789.pdfIn PDF document text
    • https://relans-nn.ru/images/docs/file/xedomogexafimo.pdfIn PDF document text
    • http://wakabaeducation.com/userfiles/file/12885415908.pdfIn PDF document text
    • http://ctcinsulator.com/uploads/file/78661262435.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/1613e9675ea383---paguwalinifesakepifi.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16140d142775cd---93660214413.pdfIn PDF document text
    • http://copy2d.com/ftp/image/file/62042172819.pdfIn PDF document text
    • http://radis-rrl.ru/userfiles/image/safejonosonezipoxebapa.pdfIn PDF document text
    • http://uralteplostroy.ru/content/file/15347887817.pdfIn PDF document text
    • https://holocaustresearch.pl/nowy/photo/file/xelelomesurogurig.pdfIn PDF document text
    • https://best-label.com/upload/files/kutejemikalawo.pdfIn PDF document text
    • http://vinhosnorte.com/images/files/wepixotinenisebekofigog.pdfIn PDF document text
    • http://daiichitelecom.com/uploads/news_file/89994998061.pdfIn PDF document text
    • https://bahispesinde.com/gnc/veri/_files/1445197201.pdfIn PDF document text
    • https://biserica-izvorul-tamaduirii.ro/files/puxeserewupowitur.pdfIn PDF document text
    • https://coil.hk/upload/files/39975155073.pdfIn PDF document text
    • http://www.anjhimayath.com/upload/file/muziki.pdfIn PDF document text
    • http://provia-events.de/pics/fotos/1/file/papaguxagijula.pdfIn PDF document text
    • http://ordineveterinarivenezia.eu/userfiles/files/ladibedexubupanukadagu.pdfIn PDF document text
    • https://dennismaloney.ca/upload/editor/file/75387286947.pdfIn PDF document text
    • https://marblobath.com/app/webroot/img/files/sofukawokubi.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/RC0zOYPQW8A/uplcv?utm_term=lent+and+holy+week+2021PDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE826 10528 bytes
SHA-256: 2c62e0af004cf7704971caa3faf7aa807f04ccd757b134421daf90a2076fc628
font_01_sfnt_off00010037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10037 17584 bytes
SHA-256: ca4a5ee1088bdc9f19ff306ec07fe7f1afc2ddbaf40e1fb65b1f0582afb9c9a5
font_02_sfnt_off00012e26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E26 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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