Malicious PDF — malware analysis report

Static analysis result for SHA-256 425713cd7513bfdf…

MALICIOUS

PDF

70.8 KB Created: 2021-09-30 22:14:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 6c27210f29fe3bcfc56dac40e83ae613 SHA-1: ae050e655b285884a3d78178aa21cedf6c11b320 SHA-256: 425713cd7513bfdfa5d670a59cec3ffa6a1b03f0f2b484ee77c1945a801eb2f5
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://i-akparat.kz/ckfinder/userfiles/files/57232567006.pdf In PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/161374c2d8eb2e---78603583121.pdfIn PDF document text
    • http://ideviceplus.be/app/webroot/files/userfiles/files/zawasi.pdfIn PDF document text
    • https://cliniquemyo.com/userfiles/file/45628244029.pdfIn PDF document text
    • https://exihomes.com/userfiles/files/nipinokamuduwetufumudev.pdfIn PDF document text
    • http://haciogullari.com/depo/sayfaresim/file/salufuwaxul.pdfIn PDF document text
    • https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/277a26493529c09a3d8382885fabc7ac/zozuwaxirirupasuru.pdfIn PDF document text
    • http://citranco.com/users/files/5773537481.pdfIn PDF document text
    • http://huile-de-nigelle.info/userfiles/file/fekatununigegunovukuk.pdfIn PDF document text
    • http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/1614260644103e---69928935396.pdfIn PDF document text
    • https://megatekspb.ru/sites/default/files/uploads/wikamevubokubozug.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16130844acf0ad---faniloxovepojewunopilig.pdfIn PDF document text
    • http://asja-doll.ru/userfiles/file/38434403657.pdfIn PDF document text
    • http://keramann.ru/uploads/files/48021822684.pdfIn PDF document text
    • http://yaqeen-eg.com/userfiles/file/94628546348.pdfIn PDF document text
    • http://lngpetro.com/userfiles/file/zekamutanujijadetaxi.pdfIn PDF document text
    • http://litho-and-co.fr/ckeditor/upload/files/24563395353.pdfIn PDF document text
    • https://namratalakhotia.com/userfiles/files/giwuwolas.pdfIn PDF document text
    • http://acsalma.hu/userfiles/files/48829598246.pdfIn PDF document text
    • http://studiotecnicoprato.eu/userfiles/files/rijejosapelaxunurobezigub.pdfIn PDF document text
    • http://csc0311.com/userfiles/file/20210904174830_9ogbh7.pdfIn PDF document text
    • http://barrarioservicos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613f4d12afbc3---21932482470.pdfIn PDF document text
    • https://www.channeloflove.com/ckfinder/userfiles/files/metefafut.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/LPIa9PGmDLg/uplcv?utm_term=public+health+nursing+book+pdfPDF 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_off0000b10a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB10A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000c91c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC91C 16900 bytes
SHA-256: a20bdd4b00dc3275745233b6e340889e6221d9b03e4a0c1c5eff8159cbd27381
font_02_sfnt_off0000f3fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FD 11232 bytes
SHA-256: 3d5177a6f72af4fdfaf735104a9a3ba04c0081a7ab46a1c69da565fc3b2eb324