Malicious PDF — malware analysis report

Static analysis result for SHA-256 445f16895365759e…

MALICIOUS

PDF

83.5 KB Created: 2021-08-29 20:16:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-11
MD5: 8b6f8fc27ef5171fbe3e1b75806800bc SHA-1: 04abf3f8ebc3b8edda5142f14fd88c05e0f7e368 SHA-256: 445f16895365759e4b2f1e17e5e5475011a606690a62d022ca867307dcdcfdd6
96 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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
  • 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 https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160d4e8f2487b5---niguvixexabawijonugipu.pdf In PDF document text
    • https://robert-zauer.cz/userfiles/file/2990339034.pdfIn PDF document text
    • https://blackknowledge.com/wp-content/plugins/super-forms/uploads/php/files/26c7ebe0136c2c9ebb67ee64ca2ef326/pisaxagofovitosuligura.pdfIn PDF document text
    • http://beytarimcilik.com/admin/editor_resim/file/21223133459.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/4085fec4cedc8600bff753b61981cf34/dazedudo.pdfIn PDF document text
    • http://kirakuramen.com/uploads/files/vukoz.pdfIn PDF document text
    • https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085f534d815b---bogakuzupativo.pdfIn PDF document text
    • http://savvyais.com/userfiles/file/48905932782.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b99ef57350---19442454948.pdfIn PDF document text
    • http://manchetenewsms.com.br/ckfinder/userfiles/files/72145179904.pdfIn PDF document text
    • http://orlickachata.cz/files/files/46991730640.pdfIn PDF document text
    • http://studioingegneramato.com/userfiles/files/62331051998.pdfIn PDF document text
    • http://kimandyoo.com/userfiles/file/lawak.pdfIn PDF document text
    • https://hrmconsulting.biz/upload/files/kumot.pdfIn PDF document text
    • https://gitedu.in/ckfinder/userfiles/files/kelilonuvorofedip.pdfIn PDF document text
    • https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/eca4a02add6a2e21270a08fe56c60309/munexowulekadipazutozona.pdfIn PDF document text
    • https://www.webplease.it/wp-content/plugins/super-forms/uploads/php/files/vtou6fhpq2ic4in7j7uspfelfk/30798029094.pdfIn PDF document text
    • http://soldresold.com/Shradhdha-Mehra/soldresold/final/ckeditorimage/files/55274926529.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=oh+lord+oh+lord+how+majestic+is+your+name+in+all+the+earthPDF 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_off0000e1ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f9c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C0 17236 bytes
SHA-256: ba03bdc732527b1595bd9ab4e0baae71aed7a4ec83279ac67c5b3b744e2e76e0
font_02_sfnt_off000125fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125FB 11092 bytes
SHA-256: 5e01e972914d7223eef51d26740efb93d7f33f99acf8cbbed20ae53b9d5f35cd

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