Malicious PDF — malware analysis report

Static analysis result for SHA-256 670b1b4c3dbd27b6…

MALICIOUS

PDF

63.0 KB Created: 2021-02-14 01:13:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 378ba56048dd0be26895be26b0522ae7 SHA-1: bd585bc0d25efdfcf53d17f5825d24f071efa05a SHA-256: 670b1b4c3dbd27b620a0ee5d65ca6f379ad2fdc77e3759f88b1c397afd98c894
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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/wix?keyword=bill+nye+volcanoes+worksheet+answers+pdf PDF link annotation
    • http://dakixofib.22web.org/85536014464.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458623/normal_600b186847e70.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477138/normal_5fecf66546875.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4424405/normal_5ff189ba47753.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485004/normal_600ac67e342eb.pdfIn PDF document text
    • http://curvepreloved.com/best_soccer_manager_games_onlinehpj9q.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487632/normal_6001907aed911.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489983/normal_5fe0389335906.pdfIn PDF document text
    • http://policyhelpcenter.com/noun_clauses_advanced_exercises49f1g.pdfIn PDF document text
    • http://geleostone.online/cristianismo_y_liberalismo8qicr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448538/normal_5ff6af8e9a818.pdfIn PDF document text
    • http://jisijopimif.66ghz.com/aion_free_to_play_ed_ncsoft.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479441/normal_601d692923f67.pdfIn PDF document text
    • http://getveran.site/carrie_book_onlinen7bym.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/jeponowon/jimimufudav.pdfIn PDF document text
    • http://gonuwufif.epizy.com/mariwiwojo.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/derwent_london_annual_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/62621072162.pdfIn PDF document text
    • https://s3.amazonaws.com/lorifawuvawot/trade_association_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/backtrack_5r3_apk.pdfIn PDF document text
    • http://nalakakowim.epizy.com/zexutilena.pdfIn PDF document text
    • http://muduwabu.rf.gd/49638752706.pdfIn PDF document text
    • http://lesizemub.epizy.com/70978982273.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_off0000b9a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB9A9 5608 bytes
SHA-256: 12240f93523562ff1516d262a1a8db5e103d705e6a2c9969b811a72958d80d84
font_01_sfnt_off0000ccd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCD9 9772 bytes
SHA-256: 7d7dc6a5919dba0bf8335a2258183b60f8c619ec418f2c8c4f91f933bec5e470

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