Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7a30c0f269fd9eb…

MALICIOUS

PDF

68.3 KB Created: 2021-02-19 07:47:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 37b20695b2e835e247aec089e0352c99 SHA-1: 38d72179e41057a51fb4049dfa0ea83a56927e0b SHA-256: c7a30c0f269fd9eb1bf73431fbe8790d8acf1304f0028dc06cc99127a5abb2dc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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://jottigo.ru/wix?keyword=men%2527s+journal+gear+guide PDF link annotation
    • https://malolikekex.weebly.com/uploads/1/3/4/7/134718462/nurasipoges.pdfIn PDF document text
    • https://cdn.sqhk.co/nezotelo/gjhggii/mafia_gangster_street_crime_city_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/sisadenev/Bgjjgza/singstar_wireless_microphones_ps2.pdfIn PDF document text
    • https://cdn.sqhk.co/gixenerusivu/a3iaQmk/lepetelorad.pdfIn PDF document text
    • https://cdn.sqhk.co/takejirasomu/ehhLhdB/major_militia_war_mayhem_mod_apk.pdfIn PDF document text
    • http://riwuveroxuwox.66ghz.com/chalkboard_menu_template.pdfIn PDF document text
    • https://cdn.sqhk.co/sefibenip/Hibghtp/vaaste_mp3_ringtone_download_pagalworld._io.pdfIn PDF document text
    • http://rarurude.22web.org/17226736397.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/jutozimifupojaxe.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/11048183290.pdfIn PDF document text
    • http://zuronixo.rf.gd/kifavuxi.pdfIn PDF document text
    • https://s3.amazonaws.com/wemazun/seboxeja.pdfIn PDF document text
    • http://karimelu.rf.gd/ababcc_form_poems.pdfIn PDF document text
    • https://s3.amazonaws.com/lososimap/tadiluxipelodapufo.pdfIn PDF document text
    • http://koxevopigi.epizy.com/bururobojag.pdfIn PDF document text
    • http://fibubaxuvuvixik.epizy.com/limehouse_discussion_platform.pdfIn PDF document text
    • http://lofukikusi.epizy.com/aicc_ki_full_form.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0FC 5108 bytes
SHA-256: 6a2b10a4b17556ebcd2f75bd4f5ebdcf907d97a261e1c5efb1e974008412c265
font_01_sfnt_off0000e27a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE27A 9932 bytes
SHA-256: 699ef69a1b5f281222b6a00e239d7e03b93e3aba4f42ba2b907d4341dbf52134