Malicious PDF — malware analysis report

Static analysis result for SHA-256 e4fdf9bef2f08e61…

MALICIOUS

PDF

72.5 KB Created: 2021-02-10 20:56:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 3dd58cf32f4dd653c60a56a3f63380b0 SHA-1: 74190b665a443f4e3793f3e36005d4509f454586 SHA-256: e4fdf9bef2f08e6194e128a67b652c28a4c7040409b65107737ec88935e86388
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://bologen.ru/123?utm_term=need+for+speed+underground+2+trainer+unlock+all+cars+and+parts PDF link annotation
    • https://cdn.sqhk.co/tikalijit/e094jbX/receita_de_glace_marmore_tradicional.pdfIn PDF document text
    • http://remontlegko.info/jurinavel85vt.pdfIn PDF document text
    • https://cdn.sqhk.co/poronujefino/jijegdO/best_hill_country_road_trip.pdfIn PDF document text
    • http://wezotarekexu.22web.org/calm_jazz_music.pdfIn PDF document text
    • http://want-seo.ru/miwululififibkmm58.pdfIn PDF document text
    • https://cdn.sqhk.co/fofodafexadu/jhbghcU/bulomiguvivavaxuzaken.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476427/normal_5ff8888350107.pdfIn PDF document text
    • http://dom-bita.org/31569086903ozujw.pdfIn PDF document text
    • http://antonioit.fun/48460243468y7qwy.pdfIn PDF document text
    • http://chebsvet.ru/pukabopikelhzv01.pdfIn PDF document text
    • http://proita.fun/quimica_geral_e_reaC3A7C3B5es_quimicas_kotz5g3xv.pdfIn PDF document text
    • https://cdn.sqhk.co/fekawitaxug/zSjdhhc/cupcake_wars_recipes_chocolate_peanut_butter.pdfIn PDF document text
    • https://cdn.sqhk.co/jorafulati/hgizF9u/oscar_de_la_renta_green_sweater.pdfIn PDF document text
    • http://cetakchantek.com/xutudusevatakuny5zde.pdfIn PDF document text
    • https://cdn.sqhk.co/wifurovud/syheggg/osmo_mindracers_target.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000de70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE70 5488 bytes
SHA-256: 718568ff363b24d4104df79714569c442c14db56d268eee1a476d886fd173c96
font_01_sfnt_off0000f13a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF13A 10316 bytes
SHA-256: 5ae17bb415746273981d2dd1977c3d396b1c8ab007e4a219eca4a40120e42d74