Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f86510ecfb9fa73…

MALICIOUS

PDF

76.3 KB Created: 2021-03-02 02:10:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 05600c076effab55d91476da3a9572df SHA-1: 93739a362c4b6c594be343c6515a3705871ad453 SHA-256: 3f86510ecfb9fa73de3caa02e810febf5f41f351b76fc640e6ec66dd6f123a24
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=quote+about+the+sun+rising+and+setting PDF link annotation
    • https://cdn.sqhk.co/gikokimofegi/9jh5Bgh/flying_swords_of_dragon_gate_full_movie_english.pdfIn PDF document text
    • http://rexevivejegox.scienceontheweb.net/wanebukisub.pdfIn PDF document text
    • https://cdn.sqhk.co/duzoxibuf/eghIhjk/bucket_list_movie_quotes_3_things.pdfIn PDF document text
    • https://cdn.sqhk.co/vumusokutil/xiibjcM/fancy_fonts_emoji_keyboard.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/luxelula/tigafixepokasupinadiwotug.pdfIn PDF document text
    • http://lukegijabezul.rf.gd/motewabobipiguva.pdfIn PDF document text
    • https://s3.amazonaws.com/bevekizadoxuj/atoms_elements_molecules_and_compounds.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/84237134251.pdfIn PDF document text
    • https://s3.amazonaws.com/rojalexipokadaz/mokukeliju.pdfIn PDF document text
    • https://s3.amazonaws.com/vapite/dixilaxaxeji.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/tegonavugigapa.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/how_much_is_dale_earnhardt_sr_diecast_cars_worth.pdfIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/bang_bang_full_movie_tamil_dubbed.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/32045126243.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/how_to_use_tape_diagrams_to_divide_fractions.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_off0000f2d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D6 5256 bytes
SHA-256: b4231c43cb1354c73ea797a36f91033c0c657830660927804e27b3bbc7a303fe
font_01_sfnt_off000104a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A2 9360 bytes
SHA-256: 3f3196896d11dd58b65bb6b75a99a950cac6e3689d9c08fb9d1ecee53705839e