Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cce4058cc6f4568…

MALICIOUS

PDF

72.4 KB Created: 2021-02-26 07:51:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7640caa91f62672d6e5b118fcf895055 SHA-1: cdf79984b068231cc6bf981515e7ce498781879b SHA-256: 4cce4058cc6f4568ea8aa0686710b50c867c4b0056225fda4cf8a05f26b51470
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://druttle.ru/award?keyword=open+sentry+safe+lost+combination PDF link annotation
    • https://cdn.sqhk.co/sidogorego/ijcgfUg/49525066409.pdfIn PDF document text
    • https://cdn.sqhk.co/xesozugis/gigdn3P/28659966143.pdfIn PDF document text
    • http://copyrightsupporteds.com/26480656102jhprj.pdfIn PDF document text
    • https://cdn.sqhk.co/ragekasa/db2bmYg/1928973240.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483624/normal_600fb3c48ff75.pdfIn PDF document text
    • http://lynciguest.com/13928727793tvjzo.pdfIn PDF document text
    • http://1xbets-reg.site/fowafudigeneepeg4.pdfIn PDF document text
    • https://cdn.sqhk.co/sezogitov/W2zSGxz/59122783896.pdfIn PDF document text
    • http://tiktokfrance.fun/definition_of_formal_assessment_in_educationyhchx.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/punagilelabon/20296206175.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/delhi_home_guard_bharti_2019_online_form.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/waverley_school_wokingham_ofsted_report.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/vupepaxidixa.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/icebound_frostbrood_vanquisher_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/28621967778.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/blouse_cutting_step_by_step_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/scrolling_text_after_effects_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_off0000de5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5E 5432 bytes
SHA-256: 44279af3ce021ccd9d1fa8b04969e9f9a6b6a7e2215e4727f560964d1b7bc0f9
font_01_sfnt_off0000f0c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0C6 10476 bytes
SHA-256: 6f38832d72292d320b3e02edb2ca32f999a12b22012a9179b907fc716cdddec5