Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a8a1054554eee4a…

MALICIOUS

PDF

73.8 KB Created: 2021-02-16 01:52:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6637a1d241f62f21e70d02091f20481d SHA-1: 111ebac425796f1f2513c6dbe9659cf218b27e6d SHA-256: 0a8a1054554eee4a400ecb37d08b4f834dc795d095c213cb3e7bf7bd8ae0fa6f
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://druttle.ru/wb?keyword=whirlpool%20front%20load%20washer%20not%20spinning%20out PDF link annotation
    • https://cdn.sqhk.co/kofatuziwu/jgdiel5/paradise_island_tv_show_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458428/normal_5fd696ab1ac7a.pdfIn PDF document text
    • https://cdn.sqhk.co/funuwovo/dPYq1hg/veduliwanipo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417033/normal_60099c068dd9d.pdfIn PDF document text
    • http://businessoutsourcing.info/zuxutozyqdg.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/hHvgjhb/craigslist_seattle_for_sale.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387701/normal_6014e642ccb1c.pdfIn PDF document text
    • https://cdn.sqhk.co/lugizumevemu/tghjdY7/hd_wallpapers_for_android_mobile_full_screen_nature.pdfIn PDF document text
    • https://cdn.sqhk.co/wemorapi/vihAhhV/battleheart_legacy_2.pdfIn PDF document text
    • http://wide-do.top/corporate_email_format_example3d0rc.pdfIn PDF document text
    • https://cdn.sqhk.co/powirafawume/hhgifec/road_sign_turn_left.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/ewhhqig/88589385643.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503525/normal_5fe6ce579bcea.pdfIn PDF document text
    • https://cdn.sqhk.co/talexadu/hieiixV/the_diplomat_state_college_rent.pdfIn PDF document text
    • https://cdn.sqhk.co/buwisotubu/bdGhiib/ted_cruz_supreme_court_book.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_off0000e3b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3B7 5408 bytes
SHA-256: 2b0f7583c87061c7d557115561f9e43a6f82afc606330e7c3114ffb3a2603525
font_01_sfnt_off0000f631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF631 10636 bytes
SHA-256: b239c9b79d05adf465f454034d3d67b56270d3957e3baa0e4566b0a5b4da3255