Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e338a139298eb23…

MALICIOUS

PDF

67.2 KB Created: 2021-01-31 05:49:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 59ed616baaaf32a09ebb0d8dfe133e9d SHA-1: 9f966c40b59e5acec18065feebfe90bedd97a0d0 SHA-256: 8e338a139298eb23ba049d43f03a5cb3969066bf70802877322c9292cc41de89
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://jacksth.ru/wb?keyword=cube%20survival%20story PDF link annotation
    • http://sanadewa.iblogger.org/lonubufiwoteti.pdfIn PDF document text
    • http://iclod.tech/the_beatles_abbey_road_rar_downloadxbrbp.pdfIn PDF document text
    • http://worldthailand.fun/laboratory_skills_checkup_4_identifying_errors_answersb0p5l.pdfIn PDF document text
    • https://cdn.sqhk.co/rivogigaweb/ekugg1S/xalejanopawexiwopamomipe.pdfIn PDF document text
    • http://brumbum3.xyz/17379483071nqpr0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470537/normal_5feb8b46a85b1.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/hijaDcL/disco_bowling_gamesgames.pdfIn PDF document text
    • https://cdn.sqhk.co/xesozugis/bORAigC/ualberta_bookstore_special_offer_codes.pdfIn PDF document text
    • http://naturalik.fun/dozobiraouz3.pdfIn PDF document text
    • http://chelamela.org/ashraf_ali_thanvi_contribution_in_psychologyaory8.pdfIn PDF document text
    • http://keepxufi.space/injustice_2_harley_quinn_outfitsaaiz1.pdfIn PDF document text
    • https://cdn.sqhk.co/kobadaxo/jbrjcif/ecommerce_business_strategy_planning_process.pdfIn PDF document text
    • http://bitcoinlearningcentre.online/drive_ahead_apk_mod_unlimited_moneylfa80.pdfIn PDF document text
    • https://cdn.sqhk.co/xasakeza/jbriaaL/98966522729.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/domegagowevag/best_caption_app_for_android.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_off0000cb90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB90 4888 bytes
SHA-256: fb6b38f421dca6622db202d39c46f9ca0025649f9ce95ca4e57e488be3e969b6
font_01_sfnt_off0000dc42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC42 10552 bytes
SHA-256: af8bca60f8eabdd6f07eb9157cd8354730762b13f16621f1f95f19057d70d2d7