Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9fc2f5c4d139b01…

MALICIOUS

PDF

71.2 KB Created: 2021-02-16 02:06:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 0ba1c4038c70cdd7cd48987e927e543a SHA-1: 730226c6fb878b237f155b761ec93ebe953d6b33 SHA-256: d9fc2f5c4d139b01fe789ef1de09107ce902389a06b48af5bd4bf22dbe024516
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://jottigo.ru/wb?keyword=how%20to%20fix%20keurig%202.0%20needle PDF link annotation
    • http://kelnoteres.xyz/432460750980d3c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477167/normal_5ff7b8a2dd352.pdfIn PDF document text
    • https://cdn.sqhk.co/potasuregoz/Kji0sRH/kidobugazonon.pdfIn PDF document text
    • https://cdn.sqhk.co/karapenakozi/iibEqja/sesumeka.pdfIn PDF document text
    • http://lavka-karamel.ru/gewipazinipuwezy9gw.pdfIn PDF document text
    • https://cdn.sqhk.co/navotezive/3IjcjgF/crunchyroll_manga_premium_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/lisesemafo/iyBr6ha/top_hits_of_the_80_s_youtube.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469386/normal_5ff921c9947ed.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/siehjmt/wejudetatodiwisel.pdfIn PDF document text
    • http://everydays.space/electronic_music_for_studying_mp3_download08ow7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487647/normal_5fd059bad3bb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495391/normal_6015fddb90200.pdfIn PDF document text
    • https://cdn.sqhk.co/rutisifelom/4vD7Eij/4_pics_1_word_6_letters_red_carpet.pdfIn PDF document text
    • https://cdn.sqhk.co/fojoravuvu/Mhhhvco/dino_theme_park_craft_ride_dinosaur_rollercoaster_tycoon.pdfIn PDF document text
    • http://samoe-samaya.ru/nagububafipasamezegesoduvowmi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000da93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA93 5176 bytes
SHA-256: d9aed9d3fba74417c03f57c0d715b6efb02e0931328340388020801da8b4bd64
font_01_sfnt_off0000ec63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC63 10472 bytes
SHA-256: f8f2a74e69cf4a3481d660e0e48268bc04cc8bb56d0cfdce27598f970dee7019