Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3b81f95f1b6b4e…

MALICIOUS

PDF

73.8 KB Created: 2022-02-13 00:36:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 3fbd2eb852213bc4e6888640b93a6b0e SHA-1: ff56c1b2379849b67d4a6f6e088a52d237c8b1bd SHA-256: 4e3b81f95f1b6b4e61b7b05b8caf2f375bca0614c5389d734f27424bb9407bcf
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9945

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
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://loheb.co.za/XSRYdR1H?utm_term=anaganaga+o+ammayi+ringtones+free PDF link annotation
    • http://ngocphuocjsc.com/public/default/ckeditor/files/bilefugasujazojovi.pdfIn PDF document text
    • http://lamekatus.com/uploads/ckeditor/files/44519468530.pdfIn PDF document text
    • http://eamenfaraz.com/cache/fck_files/file/48988357010.pdfIn PDF document text
    • https://ocvirapuato.com.mx/wp-content/plugins/super-forms/uploads/php/files/db950945c3145c13f7c2feaebaf4a396/losavevofijotes.pdfIn PDF document text
    • http://hfnhsw.com/upload/files/defutizabemaj.pdfIn PDF document text
    • http://www.mbk-montage.nl/ckfinder/userfiles/files/64115270025.pdfIn PDF document text
    • https://styliststudios.com/imagesTE/file/99862767827.pdfIn PDF document text
    • http://nbnjl.com/userfiles/files/lefagozotip.pdfIn PDF document text
    • http://recuva.kr/upload/fck_img/1644112371/file/54741510564.pdfIn PDF document text
    • http://cppzone.ru/users//blogs/file/dedinegamezen.pdfIn PDF document text
    • http://xn--80aadq3ae7aa5k.xn--p1ai/upload/file/levefedokipa.pdfIn PDF document text
    • https://barrierball.cl/ckfinder/userfiles/files/bavewipava.pdfIn PDF document text
    • http://aircond.md/upload_fck/file/46751292347.pdfIn PDF document text
    • http://agrion.org/upload/fichier/xabopotewe.pdfIn PDF document text
    • https://securityguardsupply.com/php/uploads/file/21829371925.pdfIn PDF document text
    • http://newtarrytowndeli.com/uploads/files/51140734019.pdfIn PDF document text
    • http://sns-russia.ru/userfiles/file/sukanos.pdfIn PDF document text
    • https://dangeloremodeling.com/nbloom/fckuploads/file/bevatugu.pdfIn PDF document text
    • http://www.garriagricola.com/wp-content/plugins/formcraft/file-upload/server/content/files/1617a5256266ec---46044283671.pdfIn PDF document text
    • https://stillwaiting.org/userfiles/file/5886467077.pdfIn PDF document text
    • http://objets.immoweiss.lu/userfiles/files/41690388153.pdfIn PDF document text
    • http://shijijiaming.net/filespath/files/20220120180425.pdfIn PDF document text
    • http://qdcmd.com/data/files/wuzolokel.pdfIn PDF document text
    • https://pecintajp.com/contents/files/xitekobi.pdfIn PDF document text
    • http://lionsmarsala.it/userfiles/files/juvufikozejapilunatuvife.pdfIn PDF document text
    • https://pecintajp.com/conteIn macro / runtime command snippet
    • 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_off0000b0cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB0CC 18212 bytes
SHA-256: 0751786bcd65e263291b87ca45d0982ac90a324982d1385baead9c84d0cac563
font_01_sfnt_off0000e044.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE044 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0000f764.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF764 10604 bytes
SHA-256: 3034b5d815f8ff639148fa1d6b8b38328e09145abc76ee246084b81260ec67b5
font_03_sfnt_off00010fa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FA5 1900 bytes
SHA-256: 1b006c407589fc9252123cc51eaeb5c6904db82ee47faaf52b2727a7571a5fdd