Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4f6ae846dfb4b90…

MALICIOUS

PDF

79.7 KB Created: 2022-04-05 11:39:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-01
MD5: 0538458af82a437c322c82646d9f4017 SHA-1: 7b7bd059d3245b2abf46db4e50ee622eb6e4d0a9 SHA-256: a4f6ae846dfb4b9019d7491fededc7515e11fce8eb116072b51c9a9450adef98
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 7

  • 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://yoyep.co.za/YmrXLWy8?keyword=kali%20linux%20raspberry%20pi%204%20full%20install PDF link annotation
    • https://univrab.ac.id/assets/plugin/kcfinder/upload/files/mufamobexovunomadawofis.pdfIn PDF document text
    • https://vicareyou.com/userfiles/file/37004509048.pdfIn PDF document text
    • https://dirifanijademad.weebly.com/uploads/1/3/4/8/134898971/jabumivokulitaluluvu.pdfIn PDF document text
    • http://xn----7sbjvweekof5d.xn--p1ai/files/files/23451577899.pdfIn PDF document text
    • https://moiatakashta.com/userfiles/file/88566011422.pdfIn PDF document text
    • http://ettis.net/kcfinder/upload/files/89149487138.pdfIn PDF document text
    • http://silexsys.com/ckeditor/kcfinder/upload/files/kunalobaniwopofipomazelat.pdfIn PDF document text
    • https://lwim-ouargla.dz/ar/files/5566096820.pdfIn PDF document text
    • https://jutikuned.weebly.com/uploads/1/3/5/9/135966087/00586681721.pdfIn PDF document text
    • http://an-ocn.ru/ckfinder/userfiles/files/ziludub.pdfIn PDF document text
    • https://ditixalopu.weebly.com/uploads/1/3/1/4/131410538/fufatejadub-fulivezex-gasuxuwasega.pdfIn PDF document text
    • https://xafosaxit.weebly.com/uploads/1/3/1/8/131859261/6794623.pdfIn PDF document text
    • http://cu-hinothai.com/ckfinder/userfiles/files/wosagogixexipatanogutewos.pdfIn PDF document text
    • http://olsztyntransportmedyczny.pl/userfiles/file/69182218266.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/162148250a97ef---59645446806.pdfIn PDF document text
    • https://vovikadu.weebly.com/uploads/1/3/4/5/134587732/wezasod-lopotuzifadeza-gawej-rexugateb.pdfIn PDF document text
    • https://nuropugiteno.weebly.com/uploads/1/3/5/3/135310371/6529c9745.pdfIn PDF document text
    • http://pnl.ac.id/asset/kcfinder/upload/files/domajekanuje.pdfIn PDF document text
    • https://fimekubolutad.weebly.com/uploads/1/3/4/5/134585071/bidarom.pdfIn PDF document text
    • https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4510e4d9e1c12b97e9ab092d93f7816a/73724533791.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/6b7e183dc7296748f68ddb38e1d562b4/fezazifekikoburiki.pdfIn PDF document text
    • http://eegbiofeedback-leszno.pl/userfiles/file/44516153679.pdfIn PDF document text
    • https://fililajivivumir.weebly.com/uploads/1/3/4/4/134456316/vesuxuvus.pdfIn PDF document text
    • https://zopizegojuv.weebly.com/uploads/1/3/1/3/131380511/9168bae1a295d0.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_off0000cee9.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000cee9.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cee9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEE9 18456 bytes
SHA-256: 74f6d913c5f452d02fcff664cbaf1b839236c5d0ca51a45775f3a1736e4adb90
font_01_sfnt_off00010080.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10080 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11897 10756 bytes
SHA-256: e638672f398737838406ff37c2fc93826cf3eaf657a513e2a1991580f0e12aea