Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c772b730f40f300…

MALICIOUS

PDF

75.5 KB Created: 2021-02-04 06:41:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 48c479984e10ca5a1566a953b30e6aba SHA-1: 3155b4f28a09ac814043b5fd7832d4135ce927cc SHA-256: 4c772b730f40f300533f5cdc8b07b5027b214bb5b95c104b2d6467c3ac869062
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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/123?utm_term=programming+for+dummies+pdf+free PDF link annotation
    • http://helplnstagramcontact5087423.com/game_android_offline_terpopuler_2020e3utn.pdfIn PDF document text
    • http://de-bewertung-889562.icu/barrons_ap_psychology_7th_edition_p0qvn7.pdfIn PDF document text
    • http://generalmassage.online/tikunotuworuzoheq.pdfIn PDF document text
    • https://cdn.sqhk.co/limiwebu/hidfFjc/tugelirojofajenere.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385876/normal_5fed11976ef6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368218/normal_5fd6e3214cd77.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369182/normal_5fec74e66f160.pdfIn PDF document text
    • http://trokot-newshop.online/music_racer_apple_storexcevi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4531523/normal_5fdf29d0640f4.pdfIn PDF document text
    • http://jushq.pro/biology_notes_for_class_9_kpk_boardbyul7.pdfIn PDF document text
    • http://justamorem.com/lutunimitsf6wx.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/nimuwet/galaxy_s7_android_9_official.pdfIn PDF document text
    • http://nexovototato.epizy.com/25096561617.pdfIn PDF document text
    • http://likasiz.epizy.com/mcgraw_hill_physical_science_textbook_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/kannada_movie_dialogues_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/windows_10_1903_iso_file_free.pdfIn PDF document text
    • http://jefeduwikiw.epizy.com/37780175988.pdfIn PDF document text
    • https://s3.amazonaws.com/sosupejuxofedo/wutugatasobekuwinaxova.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_off0000ea30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA30 5332 bytes
SHA-256: 48511dfdd3bfa669f2d18dea04b9e9de7478c054f1d30a413ec81c9917b69c4e
font_01_sfnt_off0000fc3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC3E 10728 bytes
SHA-256: fb79e73e136cce518f9452ae90072679bf52a0ee5c898082ed87a1e9a1457660