Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc32c2087ec151b…

MALICIOUS

PDF

72.4 KB Created: 2021-02-27 04:01:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4e89568ac5d4e3ca0b60ce5ce535f1c6 SHA-1: cac23a0d28efda94bf0e5abe2288936e34396183 SHA-256: 7bc32c2087ec151be95fbb41a9c95beaedad0fd20d2dbef6c5f5c4e0a66f1c26
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://kuzutuzo.ru/wix?keyword=sickle+cell+pedigree PDF link annotation
    • https://cdn.sqhk.co/xuwadezab/0n3jhgh/48351380816.pdfIn PDF document text
    • https://cdn.sqhk.co/vomisape/9Nia0oC/super_fancy_pants_adventure_xbox_360.pdfIn PDF document text
    • http://idealica-official.website/conan_the_barbarian_full_movie_300mbm4v3t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451039/normal_603179493edf5.pdfIn PDF document text
    • http://masajsalonunuz.com/28291110374bqcqq.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/lFDghid/ultimate_car_driving_simulator_classics_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/xefilelo/jiEKgcG/lego_super_mario_71360_starter_course.pdfIn PDF document text
    • http://weex.info/pexirevomigusil2nkw.pdfIn PDF document text
    • https://cdn.sqhk.co/zarejesorufo/Qnic2jh/8856204290.pdfIn PDF document text
    • http://ig-supportcenter.xyz/adobe_reader_installer_exerkgkp.pdfIn PDF document text
    • https://cdn.sqhk.co/dorodidur/Cgcztgi/33020838777.pdfIn PDF document text
    • https://cdn.sqhk.co/difixoruze/NLjehbL/15940235933.pdfIn PDF document text
    • https://cdn.sqhk.co/zapiseniw/fjemegh/7288070808.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495254/normal_5fd979743b049.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426697/normal_601fd6a2eaa9b.pdfIn PDF document text
    • https://cdn.sqhk.co/libuzewis/Jjdgfjb/nubipiworeb.pdfIn PDF document text
    • http://1xbets-reg.site/19396128420ce8b3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tatasuvuputo.epizy.com/what_are_the_words_to_feliz_navidad.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_off0000e008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE008 5020 bytes
SHA-256: d2da531a95f01e01c0ad14a548b791d5b1785901a2aa15604037edc9662f59a3
font_01_sfnt_off0000f130.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF130 10424 bytes
SHA-256: 3572daa97b41cb240c1139a797e050e7200c06281b3a12e4e5d15fef7c2da637

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