Malicious PDF — malware analysis report

Static analysis result for SHA-256 018b88f5dbee8669…

MALICIOUS

PDF

70.9 KB Created: 2021-02-16 02:12:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-07
MD5: c1d3aeb4821e84a0e97ef7b52437af8a SHA-1: d418219b357ec4c1b6ae19a470627f4068018f67 SHA-256: 018b88f5dbee8669d84e1c72f70c02776dce9dc41abe02caf5b79bc96374cc52
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Viral-video clickbait PDF links to suspicious host critical SE_VIRAL_VIDEO_CLICKBAIT_LINK
    Document uses viral/leaked-video lure text and links to a suspicious disposable-looking web host. This is a clickbait/traffic-scam carrier shape rather than a benign PDF link.
  • 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://druttle.ru/wb?keyword=electrical%20engineering%20colleges%20in%20colorado PDF link annotation
    • http://afracheat8.xyz/the_remains_of_doctor_bass_answer_keypad07.pdfIn PDF document text
    • https://cdn.sqhk.co/paxabuxutujo/JSjcGjb/reset_srs_airbag_computer_module.pdfIn PDF document text
    • https://cdn.sqhk.co/semexixok/i6gjhPm/mamenubuzagevufotanap.pdfIn PDF document text
    • http://antonio-ita.space/complete_champion_3._5nxbsr.pdfIn PDF document text
    • http://businesslinecenter.com/kindergarten_worksheets_writing_letters2mkvo.pdfIn PDF document text
    • https://s3.amazonaws.com/lekezaru/subject_verb_agreement_intermediate_exercises.pdfIn PDF document text
    • http://blancop.xyz/pumodajibumuwubotjxam.pdfIn PDF document text
    • https://cdn.sqhk.co/tononapiwaso/gqSGcSV/traffic_go_kart_racing_3d.pdfIn PDF document text
    • http://ziziwujavoj.iblogger.org/alteraciones_de_la_conciencia_psicologia.pdfIn PDF document text
    • http://torevifij.iblogger.org/64165801012.pdfIn PDF document text
    • https://s3.amazonaws.com/fasomusogapovi/30489434801.pdfIn PDF document text
    • https://cdn.sqhk.co/repipedifavi/jivkggf/barbie_princess_adventure_castle.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/23656484626.pdfIn PDF document text
    • https://cdn.sqhk.co/puberufibo/hiKKjhl/cat_jumps_over_gate_in_fascinating_way.pdfIn PDF document text
    • http://idealicaitalia-ufficiale.site/weselojam6v6z.pdfIn PDF document text
    • http://kpupnov.pro/77172036223vvhsz.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/adding_fractions_worksheet_5th_grade.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000d9d1.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000d9d1.bin)
    • http://juzavinozil.epizy.com/n._o._v._a_java_game_phoneky.pdfIn PDF document text
    • http://walefusariwe.epizy.com/voxewigovoviburiwiv.pdfIn PDF document text
    • http://golujaxi.epizy.com/bajrang_dal_dj_song_ringtone.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 extracted file (font_00_sfnt_off0000d9d1.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9D1 5064 bytes
SHA-256: 0d56d1b6ada328285fa2e76c5b6863c88a0beda3e3f1913e35e9dffea0340729
font_01_sfnt_off0000eb14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB14 10508 bytes
SHA-256: 9d34fe18182cc714d988692c0d4390311c46b9c5cc65e05b4cd3617e60b072d1