Malicious PDF — malware analysis report

Static analysis result for SHA-256 55172633ee7198aa…

MALICIOUS

PDF

60.8 KB Created: 2021-02-22 20:24:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e1d4ac41bffc20c39f0a93130dc3bc94 SHA-1: d47fd51c145fe92adbb3486729046478abacfc2d SHA-256: 55172633ee7198aa24394c7573dd2775d7ade69809e899b6bce414618a98a09a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/wix?keyword=current+event+worksheet PDF link annotation
    • https://cdn.sqhk.co/jugomuzuteb/7m7hhtF/tinefumojotomepobejesema.pdfIn PDF document text
    • https://cdn.sqhk.co/webunojixisa/Q8igW4X/bivuvawapisisegir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447888/normal_6027df6650e66.pdfIn PDF document text
    • https://cdn.sqhk.co/goberirud/Ghe7u51/milewufujarevijo.pdfIn PDF document text
    • https://cdn.sqhk.co/pefevepufi/sigihze/flying_chicken_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/geroterunetu/afifEgc/vilotitiwipeg.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/atv8id3/chain_reaction_game_show_app.pdfIn PDF document text
    • https://cdn.sqhk.co/nujizeres/GhaEjfO/bubble_blowing_fire_engine.pdfIn PDF document text
    • https://cdn.sqhk.co/xonarewu/hgjaAYH/mukilekapofafi.pdfIn PDF document text
    • https://cdn.sqhk.co/pagifizipafo/hhjjegc/24322500907.pdfIn PDF document text
    • https://cdn.sqhk.co/metusoteliza/5kjjheN/asus_gaming_monitor_for_xbox_series_x.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/Ajeifjd/sopogipurezije.pdfIn PDF document text
    • https://cdn.sqhk.co/zovaratigu/a4Dsz6o/word_cookies_apple_12.pdfIn PDF document text
    • https://cdn.sqhk.co/resilano/ijhWMhj/jufurozudugotizugu.pdfIn PDF document text
    • https://cdn.sqhk.co/nopavoboriru/atij8hf/dude_perfect_ping-_pong_trick_shots_for.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502906/normal_5ff26b7d94353.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rifesos.epizy.com/13998409916.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_off0000b414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB414 4652 bytes
SHA-256: 98af64d79156a80a0dc37105519b9b4c04e870e5a569410f46916bfb8201e016
font_01_sfnt_off0000c3f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3F4 10052 bytes
SHA-256: 5dce283afbbcc3c60d5d6d1cffc15e9170eb7eb8d9f62464bb92cacd5cd6133b