Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f52331f9a0f94d…

MALICIOUS

PDF

71.3 KB Created: 2022-03-30 07:33:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 9f5296c9586d44cd4ab4d5f9ddc06f72 SHA-1: 56c087ef5986aca8f1aceee02b446f4c0d0abd98 SHA-256: a4f52331f9a0f94d6f7557a6f7b7612a7213f0a0a2216380ad4aa721bfbc81a6
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://cafij.co.za/YmrXLWy8?keyword=blade%20inductrix%20switch%20air%20bnf PDF link annotation
    • https://gadolelexuzited.weebly.com/uploads/1/3/4/4/134486477/3702586.pdfIn PDF document text
    • http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/fklhfkgbkd24u2hpt2rhrr89h3/vudenepiponafixugip.pdfIn PDF document text
    • https://tuvonozesafuk.weebly.com/uploads/1/3/4/6/134600303/dawozoramukukif_zakefeb_tidimar.pdfIn PDF document text
    • https://xezujexowesujol.weebly.com/uploads/1/3/4/5/134502134/fovir.pdfIn PDF document text
    • https://zuwexonoporij.weebly.com/uploads/1/3/5/3/135317719/zonotu_valiravus.pdfIn PDF document text
    • https://lizodeva.weebly.com/uploads/1/3/5/3/135342900/zowijukimoboz_jojota_doletakedarozo.pdfIn PDF document text
    • https://natomujan.weebly.com/uploads/1/4/1/2/141218151/8671573.pdfIn PDF document text
    • http://laureysnv.be/uploads/files/ledidefaliwezomas.pdfIn PDF document text
    • https://www.procotech.be/ckeditor/kcfinder/upload/files/xuminofolexikinefaxise.pdfIn PDF document text
    • https://numuzobiw.weebly.com/uploads/1/3/4/5/134589566/jemej.pdfIn PDF document text
    • http://formasrl.com/admin/kcfinder/upload/files/kixozumabanekozeseniziti.pdfIn PDF document text
    • https://daotao.cungthieunhidanang.vn/app/webroot/upload/files/89952548725.pdfIn PDF document text
    • https://libezitotew.weebly.com/uploads/1/3/4/6/134603607/povuxekakojas_telonotifar_gunatobuvi_makawuwemuli.pdfIn PDF document text
    • http://np-laser.com/upload_fck/file/2022-3-21/20220321175930311019.pdfIn PDF document text
    • https://lilalosemojuwo.weebly.com/uploads/1/3/0/8/130814601/vafokevisisizusekaru.pdfIn PDF document text
    • https://chinatupai.com/web/js/ckfinder/userfiles/files/49198630059.pdfIn PDF document text
    • https://nelejezubifub.weebly.com/uploads/1/3/1/4/131406077/999f66b30c6.pdfIn PDF document text
    • http://hulstcustoms.ru/uploads/files/wanipuk.pdfIn PDF document text
    • https://basundharamart.com/userfiles/file/fowazajajuwam.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_off0000b169.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000b169.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB169 17388 bytes
SHA-256: e53ece2e1ed268c808a37ebe37389a317620cc3874506870328305fb1f092830
font_01_sfnt_off0000df1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1E 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0000f5c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C2 10932 bytes
SHA-256: c246234f0e3c0db4e810f4e853606a1d0d4cc04179322d808de7f4971a61d164