Malicious PDF — malware analysis report

Static analysis result for SHA-256 27b94d8ca35b7fe8…

MALICIOUS

PDF

74.7 KB Created: 2021-02-21 14:12:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b4e2b80c2ee7d8e8f3dc5b4659de277e SHA-1: cb168b813c01ef99d252aec220a74d2979e4186c SHA-256: 27b94d8ca35b7fe8a0ea4cdfddf1d664dce1529ca9254f72c388ae9c743d00e3
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=java+programming+for+complete+beginners+free PDF link annotation
    • http://interbankdigital.com/how_to_tell_the_age_of_a_duralast_car_batterygzgo6.pdfIn PDF document text
    • https://cdn.sqhk.co/jomawutid/qiijgRm/mtg_commander_2020_review.pdfIn PDF document text
    • http://repair-kvadrokopterov.ru/restriction_orifice_installation_guidelines5v4ji.pdfIn PDF document text
    • https://cdn.sqhk.co/numovasovev/gcgfjcW/bififajivoxisuzamuwon.pdfIn PDF document text
    • https://cdn.sqhk.co/bezofusipow/Sawhddn/sports_stickers_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/jabisopomuxo/jvfjgjd/retro_fps_games_on_switch.pdfIn PDF document text
    • http://denizan.com/which_fruits_contain_glutenxp7kz.pdfIn PDF document text
    • http://bitcoins-profits.com/how_to_install_coffered_ceilingbxwvk.pdfIn PDF document text
    • http://thedefenseforge.com/fascitis_plantar_tratamiento3i1m4.pdfIn PDF document text
    • http://energierecrute-emplois.com/ford_f100_repair_manual_free_download5rzzp.pdfIn PDF document text
    • http://circleshtang.xyz/aulas_de_desenvolvimento_vale_do_amanhecerapg4w.pdfIn PDF document text
    • http://hiziryigit.online/dokotin2808.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/mudurixo/41558923526.pdfIn PDF document text
    • https://s3.amazonaws.com/xovekolamoxe/list_of_worksheet_names_in_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/3809672082.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_off0000e74f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE74F 5524 bytes
SHA-256: d3c23f483cf8ed57363b27f172faddee665eeb5d0f144e30fc2577645d09f7aa
font_01_sfnt_off0000fa13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA13 10420 bytes
SHA-256: f50d07f8b7a6213a289c5cbc37747921598f887a672b52715c60fc490fa00c23