Malicious PDF — malware analysis report

Static analysis result for SHA-256 4788d421deb98bae…

MALICIOUS

PDF

76.9 KB Created: 2022-03-23 21:35:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-20
MD5: 4da4401ea41bce3043cf6c1ff5d5fed4 SHA-1: 9db7ac6da7886a6aa3feba3136ca3c2bede69ee4 SHA-256: 4788d421deb98baee68e8d8a525d2dd2d5fa09b46d817054d67ce76a8df7a0b2
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • 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.
  • 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://yubit.co.za/YmrXLWy8?keyword=analysis%20or%20evaluation%20definition PDF link annotation
    • https://gonubogebedop.weebly.com/uploads/1/3/4/8/134886664/1711967.pdfIn PDF document text
    • https://jenititufevi.weebly.com/uploads/1/3/4/5/134595561/zopofefazuvuto.pdfIn PDF document text
    • https://digeforoxega.weebly.com/uploads/1/3/4/6/134668277/4975652.pdfIn PDF document text
    • https://zesajuletolif.weebly.com/uploads/1/3/0/9/130969916/7319233.pdfIn PDF document text
    • https://letimetijomez.weebly.com/uploads/1/3/1/4/131454560/8326633.pdfIn PDF document text
    • https://leziwave.weebly.com/uploads/1/3/4/4/134446015/60e63b0ee21c4.pdfIn PDF document text
    • https://zunutupere.weebly.com/uploads/1/3/1/4/131453944/9280577.pdfIn PDF document text
    • https://kunokepipadiri.weebly.com/uploads/1/3/3/9/133997431/9896f63.pdfIn PDF document text
    • https://baxinumep.weebly.com/uploads/1/3/4/3/134366260/zinaxuge_rifejij.pdfIn PDF document text
    • https://kunokepipadiri.weebly.com/uploads/1/3/3/9/133997431/1256e1d.pdfIn PDF document text
    • https://bowineno.weebly.com/uploads/1/3/4/8/134868267/5ca1c6836.pdfIn PDF document text
    • https://jovuximunises.weebly.com/uploads/1/3/0/8/130814448/3392017.pdfIn PDF document text
    • https://rofexelugikovu.weebly.com/uploads/1/3/4/7/134732340/18309ad.pdfIn PDF document text
    • https://noxubesepa.weebly.com/uploads/1/3/7/4/137499292/2430428.pdfIn PDF document text
    • https://rarowovi.weebly.com/uploads/1/3/4/6/134664267/2016495.pdfIn PDF document text
    • https://guxanavos.weebly.com/uploads/1/3/4/2/134235011/1356953.pdfIn PDF document text
    • https://molesomux.weebly.com/uploads/1/3/2/6/132681378/2806150.pdfIn PDF document text
    • https://dimenitajobe.weebly.com/uploads/1/3/4/4/134444553/xolepilejo.pdfIn PDF document text
    • https://josebugovoje.weebly.com/uploads/1/3/0/7/130738719/c6f49a94b5f.pdfIn PDF document text
    • https://vezutokabev.weebly.com/uploads/1/3/4/7/134758566/58dbe44c.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC863 10608 bytes
SHA-256: 02f8bc93b39e2ea9e017ebb8aed98bf058ac1c68f8c2f85c11fc94acbe66b0b1
font_01_sfnt_off0000e0d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0D4 16916 bytes
SHA-256: 34017384015a813f40b19f1659106fc3317bc6791f3b93fd0ebf6d37262c2a0f
font_02_sfnt_off00010c95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C95 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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