Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e286780a544ab32…

MALICIOUS

PDF

69.5 KB Created: 2021-02-27 06:55:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 096af92d7f5b49bff73dcb00af102aed SHA-1: 1d0f1c9ef0977bfa2242806635bba010c2d758f7 SHA-256: 4e286780a544ab32796a65393df5225cbe41646ed03e22139ce1e1d16e3e918c
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://baarspo.ru/award?keyword=golf+buddy+vs4+wristband PDF link annotation
    • https://cdn.sqhk.co/juwovatagevi/hgsMhiV/37790737749.pdfIn PDF document text
    • https://cdn.sqhk.co/nurijodefa/ljhifrR/among_us_mod_minecraft_pe_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379968/normal_6002feb4a8052.pdfIn PDF document text
    • https://wolunogejafijut.weebly.com/uploads/1/3/4/6/134649672/laxuvofabutowo.pdfIn PDF document text
    • https://cdn.sqhk.co/tifapoxur/ggje0RW/tobutag.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451545/normal_602666c9761ea.pdfIn PDF document text
    • http://worelimupuvefam.mywebcommunity.org/14305029612.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494431/normal_5ffabfd2642a6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vulomalizekuvu.rf.gd/zuzaren.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/rogapefokaw.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/bollywood_movies_songs_mp4_hd_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/64167757294.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_off0000ca24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA24 5412 bytes
SHA-256: 5a4a875ec426f081430efc296a95037d5a78d19ea8399036460a6ff0d418f5ee
font_01_sfnt_off0000dcbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCBF 14276 bytes
SHA-256: b30c200d6446fcb1ee7a9c6b28e70fa2aca1218033c776c493188f10879b0832