Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e4084af520b209…

MALICIOUS

PDF

93.4 KB Created: 2021-10-07 15:43:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: cd387ec6f5a3c139d9540a6d5f0b717a SHA-1: d1081d620967cb3fcb6915445494c4ee0f56fb38 SHA-256: d3e4084af520b2097e6ed76169d2ee153cfd5629b0007fe9964fd3a0f8c28176
96 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 http://ildongwire.com/userfiles/file/kufera.pdf In PDF document text
    • http://ihdbd.org/upload/files/pavomonogusuvo.pdfIn PDF document text
    • http://modra-skola.cz/userfiles/file/98313584094.pdfIn PDF document text
    • https://terminal.hr/userfiles/file/zifeje.pdfIn PDF document text
    • http://pileshoppen.dk/userfiles/file/95161530055.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/700a8403fd89c2ca1df91cb58ef41d35/tapomolixib.pdfIn PDF document text
    • http://sevoir.hu/uploads/file/bizimukovinodilobem.pdfIn PDF document text
    • http://skisun.it/userfiles/files/64705237343.pdfIn PDF document text
    • http://s-pack.kr/userfiles/file/20210914115544.pdfIn PDF document text
    • https://shunnasato.com/nulige.pdfIn PDF document text
    • http://mcrlclient.gilcom.ro/ckfinder/userfiles/files/1177409579.pdfIn PDF document text
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/105fd99ab7e2421d7dabf8f92814b80c/90504785169.pdfIn PDF document text
    • http://rtm-plus.ru/ckfinder/userfiles/files/7140688186.pdfIn PDF document text
    • http://hakasasi.id/userfiles/file/bugukizozabe.pdfIn PDF document text
    • http://stoka-saarlouis.de/userfiles/file/fokidafubaruma.pdfIn PDF document text
    • http://brianhaymore.com/images/e/file/66968344878.pdfIn PDF document text
    • http://auto4-spb.ru/public/images/ckfinder/files/83039604856.pdfIn PDF document text
    • http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1615600cab0cfc---74393153043.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/df3600b8593805f03da930766e54d74e/wupegasobolarewopoza.pdfIn PDF document text
    • http://tinavaron.com/ckfinder/userfiles/files/vuvul.pdfIn PDF document text
    • https://tauthuy.vn/upload/files/kofuxelisabazewukidosuro.pdfIn PDF document text
    • http://paraglider24.de/pics/fotos/1/file/sulibuzijonefexesebod.pdfIn PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/161407eda1ff1f---82390797903.pdfIn PDF document text
    • http://akpanlawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/rozikezil.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=dussehra+is+the+festival+of+which+statePDF 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_off000100a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A6 20924 bytes
SHA-256: 9f8d9590e1f8d64106facd624d84e8d402e709aa6e9694b2276ec7148c527128
font_01_sfnt_off00013704.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13704 10580 bytes
SHA-256: edf9e910d47eb432b81235a865e336dfc2a6025e6191bf0ef889ab1a7b621e6d
font_02_sfnt_off00014f70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F70 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1