Malicious PDF — malware analysis report

Static analysis result for SHA-256 a64d4cb874857595…

MALICIOUS

PDF

68.4 KB Created: 2021-02-26 00:51:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 895d91ac6f035c4fb0ffca6cde8de3df SHA-1: e5fc2146ace91cb4b85ce3fcfef92f02d424c21d SHA-256: a64d4cb874857595129a6709dfc7d151e8a3bab7b55b27676dac0011bf8b45b7
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/123?utm_term=david+icke+phantom+self+pdf PDF link annotation
    • https://cdn.sqhk.co/nugofonavuf/gegj21B/blocky_highway_game_download.pdfIn PDF document text
    • https://cdn.sqhk.co/rovujesox/oidgigi/36591943173.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401519/normal_5fe09d9f1eff9.pdfIn PDF document text
    • https://cdn.sqhk.co/kawonidoza/jatvijn/wilegumilavewa.pdfIn PDF document text
    • http://frukt.fun/palobufegorh7wll.pdfIn PDF document text
    • http://zalavsky.ru/mulumelijatujerovigufewa9lfw0.pdfIn PDF document text
    • https://cdn.sqhk.co/patemugimej/guVgiib/26632627774.pdfIn PDF document text
    • http://sarhello.online/stairway_to_heaven_backward_message2h4ol.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/vabemavuputenif/94973474845.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/anydesk_for_pc_windows_xp_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/selakitubukaf.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/tijolewavivivigulewov.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/wabekijotofaduwejetuxa.pdfIn PDF document text
    • https://s3.amazonaws.com/nimuwet/aliba_ani_video_by_chosen_becky.pdfIn PDF document text
    • http://kukadafimi.rf.gd/81339064987.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_off0000cf7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF7F 5420 bytes
SHA-256: eb72dc8300b224e5bcf95e2eaaa7dfb79b09899a77f652ca3f7a8a5c58297fee
font_01_sfnt_off0000e1e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E2 10232 bytes
SHA-256: 1ae22bf67b4242402a1109b6c00ed0ed6353efe77746231c076861247bc243bf