Malicious PDF — malware analysis report

Static analysis result for SHA-256 0432c5c809be484d…

MALICIOUS

PDF

75.3 KB Created: 2021-01-30 08:18:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1ad9c41f9405385013afdeaa5fd619aa SHA-1: 048760cce9fb8abe69c89979557532f5108ca8ab SHA-256: 0432c5c809be484d5e6ce6cdd475065f9be3ba8a946bf325fc632afc4f3eab75
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/wb?keyword=project%20management%20certification%20online%20california PDF link annotation
    • https://cdn.sqhk.co/vujenibolo/CNU5sjh/sims_4_mobile_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/pixafosabow/kuShiE4/85606341742.pdfIn PDF document text
    • http://kutefujuwusara.iblogger.org/33407615367.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/ihhm4LM/60583333232.pdfIn PDF document text
    • https://cdn.sqhk.co/genopeno/gitAjcj/yeezy_500_utility_black_yeezy_supply.pdfIn PDF document text
    • https://cdn.sqhk.co/sixepatexup/XcjbXge/funny_grumpy_cat_christmas_memes.pdfIn PDF document text
    • http://cleaner-inn.club/wajafejukuxezevugirizym09.pdfIn PDF document text
    • https://cdn.sqhk.co/karapazepot/HR5pNid/wifumurojomazepuwob.pdfIn PDF document text
    • http://1green.space/duxegewlns7a.pdfIn PDF document text
    • https://luvofebujapima.weebly.com/uploads/1/3/0/9/130969865/4861255.pdfIn PDF document text
    • http://lavkavkusa.store/81561205402ylarn.pdfIn PDF document text
    • http://mgacessoria.online/13390981341iig7e.pdfIn PDF document text
    • https://cdn.sqhk.co/wixefawoz/egfjghU/othello_school_district_calendar.pdfIn PDF document text
    • http://jamidufabe.iblogger.org/como_baixar_jogo_para_ppsspp_android.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xuvunemomot.epizy.com/buvefofabipalufivugonibe.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_off0000e571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE571 5100 bytes
SHA-256: 0f645e73d4a8c9f9b545fbea614e5ad35d5f911c15a20fee297b645edbb5ac9f
font_01_sfnt_off0000f6ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BA 11816 bytes
SHA-256: 231f6096c29b2982c0303c528e209bee0d867a02de0312248d8daa4deaf9b987