Malicious PDF — malware analysis report

Static analysis result for SHA-256 66c0fe597e1379c4…

MALICIOUS

PDF

74.1 KB Created: 2021-02-24 00:35:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3db51efbd09e176a90c18e207255db5e SHA-1: b05e438d2c3eb377bb03027637ed4372437c0add SHA-256: 66c0fe597e1379c414cf9253badd376233798e343dbdff4a6714b7d006ec354f
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://leonvi.ru/123?utm_term=is+netgear+nighthawk+compatible+with+at%2526t PDF link annotation
    • http://fasad-dom.site/mortal_kombat_xl_xbox_one_movesej6wj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420451/normal_6020204cdb7d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421201/normal_600c9cde84c31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414869/normal_5fd5f77eda8a8.pdfIn PDF document text
    • http://devgame.design/122569887975ivpl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455207/normal_6018507868f16.pdfIn PDF document text
    • https://cdn.sqhk.co/lajiwaxin/jiRgjvz/84764027145.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471690/normal_60186b2116eb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426830/normal_6015e1292ca18.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413013/normal_6003bdd59d14e.pdfIn PDF document text
    • https://cdn.sqhk.co/xurawupo/9jdjhgf/chess_online_olympiad_wiki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483855/normal_6011391ae1d8e.pdfIn PDF document text
    • http://xviiivbgz.com/zixawbfu4r.pdfIn PDF document text
    • https://cdn.sqhk.co/jifigetuxu/icz2Tjf/fiborarogirenezigeguj.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/sewamos/go_to_facebook.com_login_identify_and_follow_the_instructions.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_off0000e2ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2ED 5580 bytes
SHA-256: 74e67b31a505b26786cf05297f2a961df23700b9423a50e9d6e168f02d2d7bde
font_01_sfnt_off0000f5d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5D1 11024 bytes
SHA-256: 32b1b344743dd67ff617518ae7cd11e2a8475343a33154f0a2eea5ef7feb0d65