Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af4af78e3fc70d3…

MALICIOUS

PDF

144.5 KB Created: 2022-03-31 03:47:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 82fad05ec885a45c55d158c69955cd12 SHA-1: 22c5706b2306eeb947cb0c6679fdf0ba84d44a1d SHA-256: 4af4af78e3fc70d3c02f3eea729f4f19e2a7ce4b59ac94702f50aad9ba0517ec
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9894

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
  • 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.
  • 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://norin.co.za/YmrXLWy8?keyword=die%20unendliche%20geschichte%20buch%20original PDF link annotation
    • https://zaxanedipujez.weebly.com/uploads/1/3/4/5/134582154/8427778.pdfIn PDF document text
    • http://sunnysolutions.it/uploads/assets/file/52488534808.pdfIn PDF document text
    • https://fosuxisemobiv.weebly.com/uploads/1/3/4/0/134000083/6912052.pdfIn PDF document text
    • https://szabobuszrendeles.hu/files/files/nejiz.pdfIn PDF document text
    • https://ravagowezotivix.weebly.com/uploads/1/3/6/0/136094193/kuwus_tetapisasapu_zageba.pdfIn PDF document text
    • https://nosekaboza.weebly.com/uploads/1/3/4/6/134656803/kojiraranaju.pdfIn PDF document text
    • http://tavaszitura.eu/userfiles/files/30346210745.pdfIn PDF document text
    • https://wowujagudafu.weebly.com/uploads/1/3/4/7/134751604/2a3666ca99c.pdfIn PDF document text
    • https://muzekulukusutaw.weebly.com/uploads/1/3/5/2/135296419/vuxitelesod-xidebufegeli.pdfIn PDF document text
    • http://www.auditsi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1621bbda2a4b6b---buxuvepipu.pdfIn PDF document text
    • http://gemeinschaftshaus-grossmuss.de/demo/admin/editor/kcfinder/upload/files/bebibimepin.pdfIn PDF document text
    • https://jifefovemerozix.weebly.com/uploads/1/3/4/4/134444698/mesepitigil.pdfIn PDF document text
    • http://fecoil.com/userfiles/file/riruvanagatekot.pdfIn PDF document text
    • https://xixobuba.weebly.com/uploads/1/3/4/8/134898189/kefanukulirub_bajuxu_mupuzoro.pdfIn PDF document text
    • https://sads.sk/admin/ckeditor/kcfinder/upload/files/57185752125.pdfIn PDF document text
    • http://shinex-auto.com/userfiles/file/zitixijaxim.pdfIn PDF document text
    • http://www.anglometais.com.br/adm/Editor/ckfinder/userfiles/files/zesazilitudabofid.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/1620678d9442f5---33148953096.pdfIn PDF document text
    • https://xulibaro.weebly.com/uploads/1/3/4/0/134041525/ea9ea78dfbe0daa.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001bb79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BB79 16088 bytes
SHA-256: 450eea5fc67953cc3bdc764260aa6f1739571c17331c9588074966c3dbef4c6c
font_01_sfnt_off0001d0ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D0AE 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0001e74d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E74D 20228 bytes
SHA-256: 713d08a409f186177df1afaaf1b618c8c300252fe64f3dc8952fca5189123c9e
font_03_sfnt_off00021a16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21A16 10892 bytes
SHA-256: c7d3687613f4d79cfc947d558cf8d6d15b374a081686478117bd2cd4e2b64042