Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d3af75350e14df4…

MALICIOUS

PDF

70.3 KB Created: 2021-02-02 15:28:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: dfb0eee93f9efae46ed1c006281bedd2 SHA-1: e2f0c172a2eb2c625165bbdd7ad277ec96c3fe7a SHA-256: 1d3af75350e14df489dd76b739d76eb1aa034751f4b77993a5f366901e5a1644
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/aws?utm_term=bd139+datasheet+st PDF link annotation
    • https://cdn.sqhk.co/wajuletixex/ijjiAid/wigepivonugigamit.pdfIn PDF document text
    • https://cdn.sqhk.co/wabajevebe/xghjjLl/vapetogerumuxasot.pdfIn PDF document text
    • https://cdn.sqhk.co/sotatixorawi/hegjlgd/infection_humanity_s_last_gasp_board_game.pdfIn PDF document text
    • https://cdn.sqhk.co/ledodatefu/92yjfHl/ski_jumping_live_stream_free.pdfIn PDF document text
    • https://cdn.sqhk.co/pininipata/6fjjvCB/free_flixster_login.pdfIn PDF document text
    • https://cdn.sqhk.co/girolivudafo/iOggktw/world_war_2_fighter_aircraft_pictures.pdfIn PDF document text
    • https://cdn.sqhk.co/ruvonusebex/hhigjja/86406562554.pdfIn PDF document text
    • https://cdn.sqhk.co/kekumumaxow/gchagjV/parking_near_man_o_war_steps.pdfIn PDF document text
    • http://tohld.in/poxifaporilezobesunqi4a.pdfIn PDF document text
    • https://cdn.sqhk.co/nitunoda/ifRjaii/dr_driving_free_online_game.pdfIn PDF document text
    • https://cdn.sqhk.co/tajaketo/hJwBGeq/download_drs_drone_simulator_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/tefozakozup/W1hboQx/miniclip_basketball_jam_shots.pdfIn PDF document text
    • https://cdn.sqhk.co/sixojifez/nhh3u3O/172516843.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/sikuva/jewujituk.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/subcontractor_agreement_template_uk.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_off0000d6c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6C9 5204 bytes
SHA-256: 2a01a651b6abf29790b0b2e71391de54c95340b7ea86fbdf381c6b9074124ae2
font_01_sfnt_off0000e881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE881 10548 bytes
SHA-256: 2e874cda38e7948c61146105fa2256b330102a2921928490cf7e10608ff787c5