Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cd6789dca3ed55d…

MALICIOUS

PDF

75.1 KB Created: 2022-03-31 21:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: 3850afc244fa2c62d42b0ffbe8dc4d6d SHA-1: 16375eafb48f81f6118f0e9be1e1f49e7b20c23a SHA-256: 4cd6789dca3ed55dd6ac22d08e7b253803771c6a91db3d219614c9867908c997
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://colod.co.za/YmrXLWy8?keyword=kyote%20college%20algebra%20practice%20exam%204 PDF link annotation
    • https://zelikozuka.weebly.com/uploads/1/3/4/5/134594864/8487962.pdfIn PDF document text
    • https://nuzosobife.weebly.com/uploads/1/3/4/7/134734795/mifud.pdfIn PDF document text
    • https://ruvetuse.weebly.com/uploads/1/3/4/6/134618438/vopejiw.pdfIn PDF document text
    • https://gulatavinijigu.weebly.com/uploads/1/3/4/5/134507109/4027be3faaa135.pdfIn PDF document text
    • http://grownexcel.com/fckfiles/file/7658640514.pdfIn PDF document text
    • https://zabojipenow.weebly.com/uploads/1/3/1/6/131636987/6108432.pdfIn PDF document text
    • http://www.bennex.co.th/assets/kcfinder/upload/files/34975117754.pdfIn PDF document text
    • http://ceresasrl.it/userfiles/files/tusepi.pdfIn PDF document text
    • http://lustigersteirer.at/userfiles/file/80697147983.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/161fc99f6e2dd3---sikebamenuboxat.pdfIn PDF document text
    • https://xeluvepif.weebly.com/uploads/1/3/0/7/130738993/dekubenuv.pdfIn PDF document text
    • http://speednewslive24.com/assets/ckfinder/core/connector/php/uploads/files/90292389060.pdfIn PDF document text
    • https://xigefazevape.weebly.com/uploads/1/3/4/6/134632801/4804600.pdfIn PDF document text
    • http://hmsendo.pl/uploads/editor/file/filofifeweparagedemukusuf.pdfIn PDF document text
    • https://kagodititaf.weebly.com/uploads/1/3/4/8/134868324/9b21a43d5a8.pdfIn PDF document text
    • https://lirebuzufosol.weebly.com/uploads/1/3/1/4/131453665/momuwu.pdfIn PDF document text
    • https://daxodewime.weebly.com/uploads/1/3/1/3/131398188/2225595.pdfIn PDF document text
    • https://dodatnagarancija.com/userfiles/file/pidojarefu.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_off0000c109.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c109.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c109.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC109 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d91b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD91B 16784 bytes
SHA-256: 7e48e154ff65fdfdf71a6f87b0644538d5c4d24dfd4ad320920e02749a92321d
font_02_sfnt_off000104ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104EF 10872 bytes
SHA-256: 9224f096f121c5537aeeac1d931bce9dcd26d151d27fe253263c9e790e07e9f3