Malicious PDF — malware analysis report

Static analysis result for SHA-256 3419b4bacc643181…

MALICIOUS

PDF

72.6 KB Created: 2021-02-26 14:25:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e65378db743f4e67b46e9e362598445b SHA-1: ba572b85bd9e558b57a157b871157ca7223526a6 SHA-256: 3419b4bacc6431813615d329b566be50c51c93bfbafc461faa97b62911fcaf81
144 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gimoguvi.ru/award?keyword=ravpower+charger+review PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417808/normal_6037c27a5e6dc.pdfIn PDF document text
    • http://jedomagisuw.getenjoyment.net/nozixagifoxivowakamovoku.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427085/normal_5fdd31bd9acde.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453108/normal_5fc6af307be6b.pdfIn PDF document text
    • https://cdn.sqhk.co/wifuponi/jMtNA1O/survival_kit_list.pdfIn PDF document text
    • https://cdn.sqhk.co/fenazijeguk/heeWa7G/74585782521.pdfIn PDF document text
    • https://cdn.sqhk.co/wijelukifap/jjicib8/le_100_canzoni_italiane_piu_belle_di_sempre.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401982/normal_5fc7931324874.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449406/normal_5ff8b03d2ad22.pdfIn PDF document text
    • http://jasazotinalol.mygamesonline.org/pretty_little_liars_the_perfectionists_cast.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388181/normal_5ff30b94e3fad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455886/normal_5fdaadecbd09e.pdfIn PDF document text
    • http://kejoxemubogese.mywebcommunity.org/43660297169.pdfIn PDF document text
    • http://woxuruko.medianewsonline.com/gaxewadofivuruxu.pdfIn PDF document text
    • https://cdn.sqhk.co/tarekekog/dJl1Vic/24114383980.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/kegubinefuda/background_image_black_app.pdfIn PDF document text
    • http://gipebevu.atwebpages.com/how_to_reset_asus_router_factory_settings.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/datasheet_inversor_fronius_4kw.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/ganuruzobenobewe.pdfIn PDF document text
    • http://xurosuforudev.atwebpages.com/43099352149.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_off0000de8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE8F 5144 bytes
SHA-256: 679ab12618fcc0b3be2c5c2f6e8edb5bd75e7db0d70ed781ea8ab2612cf184eb
font_01_sfnt_off0000f02f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF02F 10888 bytes
SHA-256: bf20d2010d59b3e9583639e96be6371aba58404685d6f5761128501730721b07

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