Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f3ff8f51df82b22…

MALICIOUS

PDF

74.1 KB Created: 2022-04-13 08:32:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-03
MD5: f62487f4504f6ac5d0e55fad64b0a0c3 SHA-1: 311d6b35c34abce9997366d4bb53591b94b26c8d SHA-256: 5f3ff8f51df82b2256ef10085833bcf4139a23638d01a43f25c130e276bf8f7c
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 https://hinodecoder.com/userfiles/file/27054015874.pdf In PDF document text
    • http://hurtglass.pl/upload/file/63144916881.pdfIn PDF document text
    • https://basealimentare.it/webroot/files/fck_uploads/File/gikemazamiboludekav.pdfIn PDF document text
    • http://infosierra.es/images/editor/temusakokizezazuwa.pdfIn PDF document text
    • https://xizirogubo.weebly.com/uploads/1/3/0/7/130776043/tepitig-xokewu-kabuzurufube.pdfIn PDF document text
    • https://perfectsextherapy.com/public_html/userfiles/file/vetepixitameluz.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/162454070e3e94---metizaremononararu.pdfIn PDF document text
    • https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/ee5536abc29cc568fb27e457f2527e54/mokapiliselojitetolew.pdfIn PDF document text
    • http://lingotranssgg.lingotrans.com/fck/file/waduluginuxomaj.pdfIn PDF document text
    • http://thucphamtruongthanh.com/img/files/vudonatexi.pdfIn PDF document text
    • https://dulikagenefinut.weebly.com/uploads/1/4/1/3/141363308/f4d3943a.pdfIn PDF document text
    • https://www.ekuraz.cz/upload/files/41313247560.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1624010293db1a---66553637565.pdfIn PDF document text
    • https://scalper.ir/data/files/file/42760302277.pdfIn PDF document text
    • https://odszkodowania.company/files/files/40305862662.pdfIn PDF document text
    • http://duet-czluchow.pl/userfiles/file/karuwexudanirola.pdfIn PDF document text
    • http://msnladyboy.com/ckfinder/userfiles/files/ximubekerulijitoki.pdfIn PDF document text
    • https://yubit.co.za/YmrXLWy8?keyword=how%20to%20turn%20off%20water%20to%20fire%20sprinkler%20systemPDF link annotation
    • http://www.mamafoundation.cz/ckfinder/userfiles/files/10499516457.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_off0000bebd.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000bebd.bin)

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bebd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEBD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d6cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6CF 16364 bytes
SHA-256: 03cf20e1b067e1f932018419f97b216b747522f8919ef718c6614ad55d0ba183
font_02_sfnt_off0001015b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1015B 10900 bytes
SHA-256: 3894da6924bff7fedcfe407f4477afef9ca0486c28b7c63ae78c59c88218e8e8

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