Malicious PDF — malware analysis report

Static analysis result for SHA-256 af95eb2aa49c6fb9…

MALICIOUS

PDF

72.7 KB Created: 2021-02-27 03:57:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 01dd9c8fa60575302edefcf59da5c5ba SHA-1: cb854ab5106db8f8edc42c313e2e8a99c72854bb SHA-256: af95eb2aa49c6fb964720ce0db8b0bc1647019c37f8f9af4c3a32ac511e088f8
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://vilenefex.ru/wix?keyword=romanticism+study+guide PDF link annotation
    • https://cdn.sqhk.co/mipekakiri/oWJghjj/kezenozobigewomogif.pdfIn PDF document text
    • http://itanto.space/forklift_license_online_testg79s7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420599/normal_5fd7d8c2200a7.pdfIn PDF document text
    • https://cdn.sqhk.co/bipozipo/gcigjcQ/siren_head_sounds_soundboard_unblocked.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/FkhaSjj/72017845564.pdfIn PDF document text
    • https://cdn.sqhk.co/figesuweno/j6gcja5/civil_war_battle_of_antietam_winner.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487413/normal_5ff03fc20bf12.pdfIn PDF document text
    • https://cdn.sqhk.co/puxolika/7UiaSjh/xewigosezalika.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469378/normal_5fee702909a97.pdfIn PDF document text
    • http://figimumagoko.mygamesonline.org/finders_keepers_movie_jim_carrey.pdfIn PDF document text
    • http://libertinemodels.com/29071998967bdpeo.pdfIn PDF document text
    • https://cdn.sqhk.co/mejapevelu/je2o3ig/21949420470.pdfIn PDF document text
    • https://cdn.sqhk.co/suxunuke/dhex1qf/beat_the_boss_5.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/geidTIv/survival_instinct_battle_royale_uptodown.pdfIn PDF document text
    • http://youla-24.cc/34347665286nqel2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411916/normal_602da329287eb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xegefonupekowa.epizy.com/fekiferedegugoxigezapa.pdfIn PDF document text
    • http://xirewubekato.epizy.com/coreldraw_x7_tutorial_free.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_off0000de97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE97 5240 bytes
SHA-256: 96fd2253a5607508b5fa87a118fed1cfe5cc324ebe64f7a3157bc2492dcb4e47
font_01_sfnt_off0000f066.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF066 10980 bytes
SHA-256: 0c6b23e0c6b8855ffebdf1d4449569bdd47fc8c762f93b322ed2e3cff56782b9