Malicious PDF — malware analysis report

Static analysis result for SHA-256 258fd765cfd0f478…

MALICIOUS

PDF

154.5 KB Created: 2022-01-21 20:23:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-12
MD5: 95ab39c36346ef0b8a962e6e36a6bec8 SHA-1: 6d8844bef5c9ae96d6dfd2c38403fac2a747824f SHA-256: 258fd765cfd0f478dadb350e56d923a261ac50ea1a6eba098e1a1e39a313da34
214 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7953

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 links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/1325ad72952c887d7df90e4a4768f0c7/kajilodotumeso.pdf In PDF document text
    • https://salvatoredivilio.it/userfiles/file/72283579639.pdfIn PDF document text
    • http://eclickapps.in/userfiles/files/69349519624.pdfIn PDF document text
    • http://gdfsztal.com/uploadfile/files/78475579452.pdfIn PDF document text
    • http://arc-en-cielproduce.com/ckfinder/userfiles/files/91456236171.pdfIn PDF document text
    • http://kdesignuk.com/userfiles/files/pukezalelarolexinugadoji.pdfIn PDF document text
    • http://rem-proekt.com/f/file/96368404924.pdfIn PDF document text
    • http://hitechdentalhouston.com/uploads/files/zumosojojadiliwebini.pdfIn PDF document text
    • https://desertflying.club/wp-content/plugins/formcraft/file-upload/server/content/files/161adf740b0907---8523572050.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1619426f5b998a---gunelukokofa.pdfIn PDF document text
    • http://vistobrasil.net/uploads/file/29836662065.pdfIn PDF document text
    • https://priscar.com/documents/files/fifoxebipukedeludoxako.pdfIn PDF document text
    • https://matao.ro/app/webroot/files/userfiles/files/6555560180.pdfIn PDF document text
    • https://ckfinder.pamlskovnik.cz/ckfinder/userfiles/files/kisekozeko.pdfIn PDF document text
    • https://fieldofgreen.com/wp-content/plugins/super-forms/uploads/php/files/0da88e09e64699ee03fd033816f54586/86326132326.pdfIn PDF document text
    • http://damvua.com/damvua/public/images/files/zikej.pdfIn PDF document text
    • http://wsp.pl/userfiles/file/46551199278.pdfIn PDF document text
    • https://www.pepinieres-gey.fr/ckfinder/userfiles/files/lagoxisuxanovenofapixetom.pdfIn PDF document text
    • https://aviseco.ro/userfiles/file/bonidagevajositufe.pdfIn PDF document text
    • http://ros-grad.ru/fck_editor_files/files/22876894705.pdfIn PDF document text
    • http://sithome.com/upfiles/file/20220102041728.pdfIn PDF document text
    • http://www.icodar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16191e3f5001af---bapovepufurizatabagid.pdfIn PDF document text
    • http://legrand-valena.su/kcfinder/upload/files/4789027220.pdfIn PDF document text
    • http://medicaldistri.com/ckfinder_files/files/kipurewujujupasewewejo.pdfIn PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/dh4rn6j8r1kgckd30baojiam5d/24358379174.pdfIn PDF document text
    • https://hairidol.isme.us/images/file/xogezaxoviwuv.pdfIn PDF document text
    • https://anhhuynoithat.com/asset/files/vigepawadalupobagut.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a1104eb906c---19703811747.pdfIn PDF document text
    • http://www.easemyloan.in/assets/kcfinder/upload/files/43845380523.pdfIn PDF document text
    • https://funeralinnovations.com/copilots/upload/files/libefilaganade.pdfIn PDF document text
    • https://allytemp.ru/uplcv?utm_term=cloudera+navigator+audit+reportsIn PDF document text
    • http://toflight.mobi/attachment/ckeditor/files/d67e2d90d0292da125926601a79a933b.pdfIn PDF document text
    • 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 extracted file (font_00_sfnt_off00020170.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00020170.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00020170.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20170 16140 bytes
SHA-256: af3020d03744ac06ef9a61d0b9183a9925a956a4736bdae5b7e726a1343a4bff
font_01_sfnt_off00022b3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22B3D 10764 bytes
SHA-256: d2992dc1491bbffb421e37db44de649b648e9f0476cfc824f147187f297626bb
font_02_sfnt_off000243f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x243F3 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336