Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d7b7af3ecd55e45…

MALICIOUS

PDF

65.5 KB Created: 2021-03-03 02:31:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 18fdd33cbc35f34a5d9b5183029afadb SHA-1: 1c3213a48f9f893a14c8fe97245e6f5581237189 SHA-256: 2d7b7af3ecd55e45f6933c140e0e4b2dee83b3fb8d0d5328a3dcd347bdd9ebe8
126 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
  • 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/award?keyword=naming+molecular+compounds+worksheet+answers+chemistry+if8766 PDF link annotation
    • https://cdn.sqhk.co/tumosirewuw/IOhjRif/12968252573.pdfIn PDF document text
    • http://streichpack.online/xuzutewinofipegbh.pdfIn PDF document text
    • http://umniashka.ru/sedatopagenimupurufuzoxesbnsjb.pdfIn PDF document text
    • https://motaxajofepox.weebly.com/uploads/1/3/1/3/131381237/zuledomijejujavezaju.pdfIn PDF document text
    • http://reactivaperu-2020.com/weekly_school_timetable_template_freexfkty.pdfIn PDF document text
    • https://cdn.sqhk.co/parikozug/WidqjhG/mineral_oil_uses_for_hair.pdfIn PDF document text
    • http://xuriretijidaja.22web.org/nasiferajipagulugimuv.pdfIn PDF document text
    • http://pikegupima.medianewsonline.com/acordes_de_piano_para_canciones_tristes.pdfIn PDF document text
    • http://xapiduxirob.mywebcommunity.org/losizibelevojewar.pdfIn PDF document text
    • http://hrushch.space/peyo_merce_ensena_inglesg67va.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mifasujabad.epizy.com/nikon_p510_price_in_india.pdfIn PDF document text
    • http://xinifaduzinuvu.onlinewebshop.net/21422429668.pdfIn PDF document text
    • http://tifavamifikas.myartsonline.com/xovujifaxulov.pdfIn PDF document text
    • http://vuzujalaj.epizy.com/nc_driving_class_online.pdfIn PDF document text
    • http://xuxerutiwuv.onlinewebshop.net/92072888128.pdfIn PDF document text
    • http://moretavumafoge.epizy.com/angularjs_templatecache_directive.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_off0000c27c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC27C 6224 bytes
SHA-256: 3ccdbb99924b9b4526a40910b5484c2bcb448975c4ace564ab3956a9ccdc8d14
font_01_sfnt_off0000d7a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7A4 9660 bytes
SHA-256: 3ff713e53220fd3eab078ed4829609179eefc3983af9b7e7a2653eaa0e38d91e