Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd40798fff6dd649…

MALICIOUS

PDF

72.3 KB Created: 2021-02-10 04:55:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 85beccf824a1fb7d623a61d1435b89ee SHA-1: bf46e38ea601535505197f0f16d2a63ba596667f SHA-256: cd40798fff6dd649c4b08eb27e3375566a6aaee0d5196a3805bf0320e192bcf1
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://seumenha.ru/aws?utm_term=happy+birthday+sister+gif+images PDF link annotation
    • https://cdn.sqhk.co/zanotunuzi/idTigGw/kasef.pdfIn PDF document text
    • https://xotubowewetiner.weebly.com/uploads/1/3/2/6/132696149/mixesurim-nosuwebila-gomopozi.pdfIn PDF document text
    • http://nukowivoxom.iblogger.org/12701530571.pdfIn PDF document text
    • http://nefuzixitelu.iblogger.org/nunojemesamojitipiwepidub.pdfIn PDF document text
    • https://sogazefod.weebly.com/uploads/1/3/4/0/134000298/guwakofetiribuza.pdfIn PDF document text
    • https://cdn.sqhk.co/nopawuwam/MMDiijf/beat_extreme_rhythm_tap_music_games.pdfIn PDF document text
    • https://bidemujoniju.weebly.com/uploads/1/3/1/8/131856381/8436685.pdfIn PDF document text
    • https://vozokeku.weebly.com/uploads/1/3/1/8/131857213/752556.pdfIn PDF document text
    • https://dijamolilum.weebly.com/uploads/1/3/5/3/135347404/6daace38517628.pdfIn PDF document text
    • https://cdn.sqhk.co/xufojidaju/bH78SpW/piano_magic_tiles_challenges_2_despacito_mod_apk.pdfIn PDF document text
    • https://buvonage.weebly.com/uploads/1/3/0/9/130969236/c714dda88bc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vegiziguso.rf.gd/retro_chef_kitchenware_uniforms.pdfIn PDF document text
    • http://nisogifamesada.epizy.com/transformation_chimique_ou_physique_exemple.pdfIn PDF document text
    • http://doregupubufuve.rf.gd/37328896708.pdfIn PDF document text
    • http://zegokufa.epizy.com/fovanujuv.pdfIn PDF document text
    • http://gedesopow.rf.gd/baron_trump_book.pdfIn PDF document text
    • http://sasajido.epizy.com/zinomizizegimikodawof.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/zurizebozubepumafugi.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_off0000df65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF65 5624 bytes
SHA-256: ef3c61b8d3c4153594e071ac8f917010d1f204f2ae7b133ea6c6e9fe706cab4f
font_01_sfnt_off0000f25f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF25F 9928 bytes
SHA-256: de0facf7c7f47542e71b90b8b3b814503388f89c4002f19137296280de08f3ad