Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8f333da491fcbfc…

MALICIOUS

PDF

71.5 KB Created: 2021-02-17 04:05:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4d21077be1b2a273d3725f3cfd10538f SHA-1: af14cbe1d6645a428e644247cc010919eeee3921 SHA-256: a8f333da491fcbfc01ed1b505873cd3f996ed77eb3164a9e1af78d2d41030835
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=alchemist%25E2%2580%2599s+supplies+dnd PDF link annotation
    • http://pusaburuku.22web.org/thanksgiving_coordinate_graphing_picture_worksheets.pdfIn PDF document text
    • http://123dutch.com/perfect_duet_lyricszhtje.pdfIn PDF document text
    • https://kitabenulo.weebly.com/uploads/1/3/0/9/130969432/8275815.pdfIn PDF document text
    • http://zewojapu.22web.org/tosujasopupoxufalemedeleb.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/ij8iehg/dining_table_set_for_4_white.pdfIn PDF document text
    • https://cdn.sqhk.co/xubipoxeguza/jchfhfN/king_of_avalon_cheats_android.pdfIn PDF document text
    • https://wegoboxup.weebly.com/uploads/1/3/4/7/134772399/6078723.pdfIn PDF document text
    • http://jijufik.22web.org/carnival_games_wii.pdfIn PDF document text
    • http://egosikenclub.com/wasupubizalok6tixz.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/wibedubosateg/48626903555.pdfIn PDF document text
    • https://s3.amazonaws.com/jolunenafobuw/american_music_awards_opening_performance_video.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/bevuv.pdfIn PDF document text
    • http://gapatija.epizy.com/android_tv_rom_amlogic_s905x.pdfIn PDF document text
    • http://siromalezevupag.rf.gd/didagobifeluworizatu.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_off0000dae9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE9 5048 bytes
SHA-256: 0d7505afc0e3a9083dd2eda9af366f3ff99166cdbff7e97c70ef4abeba160da9
font_01_sfnt_off0000ebff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFF 10444 bytes
SHA-256: dec30dd2289558c043295f9a0d8c274f50c09dedceb78b55d4524991fbbfae8e