Malicious PDF — malware analysis report

Static analysis result for SHA-256 537013d405af2bc0…

MALICIOUS

PDF

71.0 KB Created: 2021-01-27 06:23:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7437d2ba504f860e94e7f2adc42c8992 SHA-1: ee10c213faff6613b70c442df4aa68e6d3402eaf SHA-256: 537013d405af2bc00c2c8a1078260bd49026c0d4d3bbee54e7deae168a09883d
136 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
  • 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://seumenha.ru/wb?keyword=pictoword%20solution%20level%2092 PDF link annotation
    • https://cdn.sqhk.co/vovusupa/BiedhaE/gakeduwapexebawajodoni.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459640/normal_5feb9b37d7f49.pdfIn PDF document text
    • https://cdn.sqhk.co/lufelumad/iheTBie/screen_recorder_for_mac_free_download_no_watermark.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426696/normal_5fee8d85869b5.pdfIn PDF document text
    • https://cdn.sqhk.co/sadebupunen/ig4Vhhi/civil_war_generals_2_gog.pdfIn PDF document text
    • https://cdn.sqhk.co/jenexovu/j3hbNY2/tesco_ladies_tops_and_jumpers.pdfIn PDF document text
    • https://cdn.sqhk.co/xewebevij/Eqgeo5a/54855834968.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470692/normal_5fe9304c1012e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zuwarikufaz.epizy.com/assault_android_cactus_metacritic.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/a._x._l_movie_free.pdfIn PDF document text
    • https://s3.amazonaws.com/bokexizometun/newry_reporter_facebook.pdfIn PDF document text
    • https://s3.amazonaws.com/suximawo/mojamirus.pdfIn PDF document text
    • http://dovobol.epizy.com/video_di_instagram_tanpa_menggunakan_aplikasi.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/forex_candlestick_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/rumakur.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_off0000d9f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9F8 5164 bytes
SHA-256: 6939edf1628b0d7c6fb56c4e7cde35011ceae7995e14aa1144daa9b14de1600a
font_01_sfnt_off0000ebb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB0 10368 bytes
SHA-256: b565158c2b878a81ee3940e72be63c3ae6559cb7d3776dec0508e8a1438f6dcd