Malicious PDF — malware analysis report

Static analysis result for SHA-256 de3daffa64b33f19…

MALICIOUS

PDF

64.8 KB Created: 2021-01-28 22:14:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 311231a00d10c81f165edb487cdf5c40 SHA-1: 4afa0dce23c535c1595ea63a641f2ed7186a1246 SHA-256: de3daffa64b33f19e04410145cf1ad68521348a07d6ce53712d31812de31f564
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/wb?keyword=chicken%20run%20peeksville%20road%20locust%20grove%20ga In PDF document text
    • https://cdn-cms.f-static.net/uploads/4426408/normal_5fd89239962ea.pdfIn PDF document text
    • https://cdn.sqhk.co/jepipovi/gjYhfjh/real_football_2012_old_version_download.pdfIn PDF document text
    • https://cdn.sqhk.co/duditizonut/jgdjdhd/free_music_downloader_app_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/setewefasari/m8HXXjc/free_v_bucks_skins_battle_royale_pass_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/danopefasuf/zdJqjbA/wegitamukexib.pdfIn PDF document text
    • https://cdn.sqhk.co/jukowejazus/Hsjaihc/xazafuzawinofewupatoxepat.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/YQ7ibgh/kibukuxuf.pdfIn PDF document text
    • https://cdn.sqhk.co/vasegodesazu/gjD4giw/screen_time_not_working_iphone_6.pdfIn PDF document text
    • https://cdn.sqhk.co/devepogisog/DheiaZI/master_violin_tuner_online.pdfIn PDF document text
    • https://cdn.sqhk.co/perigupa/DBChhUm/muxikame.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/eAviqgj/toravavelemunasenejedaw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447089/normal_5fd100bcc6bfc.pdfIn PDF document text
    • https://cdn.sqhk.co/derepinejabi/Pgcijhf/ninja_blade_xbox_360_trainer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409813/normal_6010e3811d436.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/fokapikow/bunepiv.pdfIn PDF document text
    • http://tutalogivenerok.epizy.com/vubig.pdfIn PDF document text
    • https://s3.amazonaws.com/wupiwupiwot/sharechat_app_in_telugu_old_version.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/jalilatil.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_off0000c0ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0BA 5364 bytes
SHA-256: d184863a58f7fb5b171d6d928d310d5d298d93e7938195771643e61ac6ef2224
font_01_sfnt_off0000d2f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2F7 10212 bytes
SHA-256: 97b92899ecf5aab466e2d700eec8f6f8a353f086c4bb837a6606b663a844b07c

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