Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bd54c28f31b2d1c…

MALICIOUS

PDF

70.9 KB Created: 2021-02-21 13:23:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e0eada84659978871d6362d633e3b036 SHA-1: ccdf11b58b9a092cd95a102bdabc658fc5606c0b SHA-256: 7bd54c28f31b2d1cb84c7369201846dbb6af0023dd567e494702c456d5cab090
136 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
  • 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://bologen.ru/wb?keyword=broccoli%20feta%20pasta%20salad%20recipe PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368487/normal_5fe17d6fcc289.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459166/normal_5fc74dea319bf.pdfIn PDF document text
    • http://srakan.space/how_do_i_get_my_hdmi_to_work_on_my_toshiba_tv4oflb.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxagoxoman/OZbe9hd/best_rally_car_game_for_xbox_360.pdfIn PDF document text
    • https://cdn.sqhk.co/pinofizulag/gq2Vgdd/majiserijulofozorevino.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408002/normal_5feb476a56950.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367000/normal_5fe8a015dfc4f.pdfIn PDF document text
    • https://cdn.sqhk.co/suxavawudomo/8Jjb9gR/27256651292.pdfIn PDF document text
    • https://cdn.sqhk.co/bodujemep/7Wphcha/nasapupebijojakakutidiw.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/najubu/wibixamabavafa.pdfIn PDF document text
    • https://s3.amazonaws.com/warapagefasovi/assembler_3_en_un_seul.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/stomach_stapling_dietary_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/dewutexorob/live_satellite_map_3d.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/75565645561.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/janitrol_furnace_ignitor.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/balisidapeg.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/android_tv_smart_tv_samsung.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/research_paper_template.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_off0000d5c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5C7 5200 bytes
SHA-256: 170da494e5e9e37d5f7d33f6954d7cd1477c4aed894b554ede5d358b44f99985
font_01_sfnt_off0000e786.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE786 11532 bytes
SHA-256: b80340d374f4ead418fee86c8137bfb1c9e8bd1e4826fe69cbaf16e08bbab252