Malicious PDF — malware analysis report

Static analysis result for SHA-256 08057f82cb124a5b…

MALICIOUS

PDF

87.2 KB Created: 2021-09-13 21:55:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-21
MD5: eab21c4e9b504b194efc7e64225ad55f SHA-1: 6cbf241cd78becf19b90cb6b96042a5c941702c2 SHA-256: 08057f82cb124a5b85eebdcf872ca5116f80f522ddbdc6e1c928a09babfe178f
214 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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://ketchas.ru/uplcv?utm_term=best+crime+solving+games+android In PDF document text
    • http://hud101.vn/webroot/img/posts/files/36850212211.pdfIn PDF document text
    • https://habrit.tw/ckfinder/userfiles/files/68810401386.pdfIn PDF document text
    • http://77owship.netsociality.com/upload/files/kemoravikixakiwemovov.pdfIn PDF document text
    • https://www.douggoodkin.com/admin/ckfinder/userfiles/files/wesesevem.pdfIn PDF document text
    • http://worthingtonpark101.com/userimages/riwuzud.pdfIn PDF document text
    • http://shamayachts.com/upload/file/24608905726.pdfIn PDF document text
    • https://goldgreiner.de/userfiles/file/88371179193.pdfIn PDF document text
    • https://shoppingplanet.cityplanet.ro/ckfinder/userfiles/files/19654687655.pdfIn PDF document text
    • http://assotechne.eu/userfiles/files/sibofukexazitowuworuzon.pdfIn PDF document text
    • https://holzhaus-suedtirol.it/wp-content/plugins/formcraft/file-upload/server/content/files/161379fddcb7ee---vakevipiwumogef.pdfIn PDF document text
    • http://artattack-concerts.de/files/file/25762192505.pdfIn PDF document text
    • http://vangphutai.com/images/uploads/files/44287088951.pdfIn PDF document text
    • https://beeshark.ro/app/webroot/files/userfiles/files/93264110657.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/161364d7f4e6b6.pdfIn PDF document text
    • http://lammermoor.net/imagenes/file/sazukodijog.pdfIn PDF document text
    • https://pmeds.us/userfiles/file/24851951361.pdfIn PDF document text
    • https://g-ortho.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613215d2ebd0b---52545618337.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/29866dbec3870273fec1144f9c73f4ce/50711260998.pdfIn PDF document text
    • https://www.sevgiliyevideo.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613483f87e495---78767497362.pdfIn PDF document text
    • http://abwcolley.com/uploads/files/29702440948.pdfIn PDF document text
    • http://tk-weld.com/images/library/File/zavokupami.pdfIn PDF document text
    • http://th-hl.com///upload/files/timizotedonuwijubivakoz.pdfIn PDF document text
    • http://sozopolihills.com/userfiles/file/76554629652.pdfIn PDF document text
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/d92a869f1aca530f16d029accd48e559/resakusidotogoserise.pdfIn PDF document text
    • https://www.aironface.com/wp-content/plugins/super-forms/uploads/php/files/d4518f9a907ac1b8da38190c3792ddec/89071150123.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_off0000f334.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000f334.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF334 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00010b4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B4B 10832 bytes
SHA-256: a94c52e17e09dde9b1d0387777dcdc5090427321abae84efd8f327512725c8cf
font_02_sfnt_off00012421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12421 16720 bytes
SHA-256: e8ded9c08cf810d4e427d95b31056b95a8ffc4185cb1e1a15e994fcf327e7933