Malicious PDF — malware analysis report

Static analysis result for SHA-256 24a469e6b3339d10…

MALICIOUS

PDF

69.2 KB Created: 2021-03-01 17:03:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 405f71e39280bd6f8561529543092fd8 SHA-1: b7db3f2dab8fe4e065bde2d87763ee08f7e15f4f SHA-256: 24a469e6b3339d1020ba08af27170def54e862ecbb8c9482ddd9aad750250c72
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/award?keyword=active+and+passive+voice+worksheet+with+answers PDF link annotation
    • https://cdn.sqhk.co/zoxowowi/iihbgib/51290584463.pdfIn PDF document text
    • https://cdn.sqhk.co/jojojidatun/dheJLja/us_stock_and_bond_market_holidays_2020.pdfIn PDF document text
    • http://slimerecipe.org/data_post_mortem_adalahn40z7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422906/normal_5feb173cd9903.pdfIn PDF document text
    • http://com-signto6.xyz/10975180697tlgm2.pdfIn PDF document text
    • http://policyhelpcenter.com/best_video_games_for_11_year_olds_2019m588y.pdfIn PDF document text
    • http://classkaod.ru/sunny_words_level_25_answersqhnzw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459482/normal_603a505be2cd1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379355/normal_5fdad06a483bf.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/muxegeza/90135351607.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/rizagufuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/report_table_of_contents_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/lopeteb/voketaposa.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/7668861693.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/2839655935.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_off0000d2af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2AF 5336 bytes
SHA-256: e7bebed10dc4d87bab7236e391819862ba931e3726e50e23632e864790157c81
font_01_sfnt_off0000e4e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E8 10136 bytes
SHA-256: 330a2e8355d7e3c6b518c3c226ad0c3bfd948670711e39f4b31e4cfa102e948f