Malicious PDF — malware analysis report

Static analysis result for SHA-256 308f73f63e48f660…

MALICIOUS

PDF

65.4 KB Created: 2021-02-05 20:47:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: eba12dd0bf8345c4afe8aa0e96d3a7bb SHA-1: dadc0555656b6c930a0d76b7bd20c008b5cf431b SHA-256: 308f73f63e48f66054fe6bb5b15312b743c9f2f803cb21d578ea13fa50c7528e
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://bologen.ru/123?utm_term=aer+lingus+vacation+store+promo+code PDF link annotation
    • http://teachersaid.fun/lowibewabowotidetilokonop0ct.pdfIn PDF document text
    • http://zootime.store/874593867981n4en.pdfIn PDF document text
    • http://bottlechainworld.com/1992051948488oug.pdfIn PDF document text
    • http://predouche.xyz/18283787755hmikt.pdfIn PDF document text
    • http://ig-about.net/blend_it_3d_game_downloadwqeuf.pdfIn PDF document text
    • http://accface.in/top_empresarios_multiniveljzq2l.pdfIn PDF document text
    • http://hotita.fun/christmas_songs_sheet_music_clarineteezvh.pdfIn PDF document text
    • http://betflixguvenilirmi.com/ladukewivoridewecivv.pdfIn PDF document text
    • https://rujuzodojavumip.weebly.com/uploads/1/3/4/7/134726220/dirovaditefo_jerifusam.pdfIn PDF document text
    • http://pelistens.xyz/43755172875hd15z.pdfIn PDF document text
    • http://boost-shop.xyz/vr_games_online_free_to_playn00kf.pdfIn PDF document text
    • http://zoomita.fun/graphing_lines_with_a_table_of_values_worksheetyhwrm.pdfIn PDF document text
    • https://cdn.sqhk.co/feripamapuv/ZagjYNw/digging_into_browser-_based_crypto_mining.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/difVGGy/xososomodipibafepevod.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/mizeteb/43103580055.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/nanesasev.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxirefare/amazing_cosmetics_concealer_shade_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/gadumagabusodel/gizosem.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_off0000bf9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF9B 5444 bytes
SHA-256: 85e56954de4dbb8adebf654fcea414170841d8065374d05768be5d7850e74730
font_01_sfnt_off0000d211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD211 10776 bytes
SHA-256: 95cb4d921e699eb33b373fe23da665034bfb4a03b86c9c37bfc4c508a61a0a08