Malicious PDF — malware analysis report

Static analysis result for SHA-256 7af4f20405d8d938…

MALICIOUS

PDF

71.6 KB Created: 2021-03-03 22:36:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6eac0dbb9e19c092dc0d022df17552db SHA-1: 4b015f20c334d6109179a821efd0cd392d9e5635 SHA-256: 7af4f20405d8d9386ef5c9b04ff176350d55f33a89e3edb6b69f092afc2c958f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://botokaw.ru/award?keyword=what+are+cognitive+milestones PDF link annotation
    • http://lovelyhouse.online/broadsheet_newspaper_article_meaningptnak.pdfIn PDF document text
    • http://kaxavetaxudu.mywebcommunity.org/5426351559.pdfIn PDF document text
    • https://litukepulaj.weebly.com/uploads/1/3/4/8/134863372/7c6cc22b.pdfIn PDF document text
    • https://cdn.sqhk.co/xemuxebu/jrwLFV1/pokasalewijijakobobina.pdfIn PDF document text
    • https://cdn.sqhk.co/luzigagoguna/ivY0chc/world_war_z_cast.pdfIn PDF document text
    • https://cdn.sqhk.co/sifajoxojif/Dhc3ghd/3316074648.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mejuton.epizy.com/young_life_need_talk_illustrations.pdfIn PDF document text
    • http://vudubarexofibuf.rf.gd/social_media_marketing_tuten_solomon_indice.pdfIn PDF document text
    • http://satanomoxa.rf.gd/minecraft_1._8_free_pc_windows_7.pdfIn PDF document text
    • http://bimomog.rf.gd/nunakewojubatove.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_off0000dbd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD1 5284 bytes
SHA-256: 3b1e9f5664f50d138c3d4c149a6be071027dae926d4e490453b91dd5cb54c07a
font_01_sfnt_off0000edb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDB4 10492 bytes
SHA-256: 25efabfe42fe6232078bcd38d62780e5fae0e9c9dbcafb3d6ae0c64c8d54a1e2