Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf4930812e94604c…

MALICIOUS

PDF

70.2 KB Created: 2021-02-26 05:26:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7784494c46a12a3f395c6c71bf50d92a SHA-1: a778af8364848638e5557697666adc6605f9fb22 SHA-256: bf4930812e94604c5fb1f3de81269400bf547f222e55c3084518b5c245eed747
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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/award?keyword=browning+auto+5+serial+number+location PDF link annotation
    • https://cdn.sqhk.co/dasofuduveje/jdjjgcf/75110678732.pdfIn PDF document text
    • http://deflecfcvy.best/nuwalamaxapobemv07.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/eOLk56W/65826052596.pdfIn PDF document text
    • https://cdn.sqhk.co/jezuleku/Ghbgejc/dikesabimenafupenupideg.pdfIn PDF document text
    • https://cdn.sqhk.co/soxuvezosapa/jbaieMv/org_2021_apk_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/tisojubew/hcHHb65/my_boy_games_free_download_zip.pdfIn PDF document text
    • https://cdn.sqhk.co/wepurodapike/dj1fibI/mabaja.pdfIn PDF document text
    • https://cdn.sqhk.co/xetasenuwoji/8Xgcihn/godville_commands_pet.pdfIn PDF document text
    • https://belawutuvuzepim.weebly.com/uploads/1/3/4/6/134605506/79df72299400c.pdfIn PDF document text
    • https://bubosetew.weebly.com/uploads/1/3/4/5/134515161/kapowujosaladebejev.pdfIn PDF document text
    • http://3gusevshop.space/information_meaning_in_assamesefnsi3.pdfIn PDF document text
    • https://cdn.sqhk.co/rodofusavivi/byicBc3/81035718333.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/bodajaku/social_psychology_9th_edition_aronson_free.pdfIn PDF document text
    • http://wolaniloko.epizy.com/dependency_injection_interview_questions_and_answers.pdfIn PDF document text
    • http://jodewejuwuw.epizy.com/kazuzapibewomenevo.pdfIn PDF document text
    • http://teruwizirazi.rf.gd/linear_voltage_regulator.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/sewesi.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/general_comments_for_report_cards_middle_school.pdfIn PDF document text
    • https://s3.amazonaws.com/jalasilunaz/saguwidiju.pdfIn PDF document text
    • https://s3.amazonaws.com/xujitezu/40_hour_work_week_schedule_template.pdfIn PDF document text
    • http://kiwaxujunexozet.epizy.com/48219609109.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_off0000d740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD740 5524 bytes
SHA-256: 69b91c61bf2b08422023185a0cb137b157429e58d9f061e9a94d792f98a9579a
font_01_sfnt_off0000ea0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA0E 9792 bytes
SHA-256: b4349337d12f1ca6cefc3a42ba1b68b7bd74c1a16ad3b42f2662c75dc1cb43e9

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