Malicious PDF — malware analysis report

Static analysis result for SHA-256 f23e987127c3c0be…

MALICIOUS

PDF

70.9 KB Created: 2021-02-20 11:29:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8b72d2cb28b92929b432c2115d09871d SHA-1: 41b83a0493d3e71f892059409ea5430345427bc7 SHA-256: f23e987127c3c0be1bb9b7cab509f627ad6a65020868696b3eddb8e7f9ff8506
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wix?keyword=street+fighter+v+apk+mod PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4464700/normal_601eae53ac8ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452374/normal_602ca5fe474b3.pdfIn PDF document text
    • http://nufogikije.22web.org/xivagefitidutarotoluni.pdfIn PDF document text
    • http://hs-life.ru/nidirekijakixiwapi6w2m6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501980/normal_5ffad4387aaa8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402944/normal_5fe454d84f69f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413703/normal_6001d768264ea.pdfIn PDF document text
    • http://pinegrvuig.fun/xizemolupovodopijotiduogltt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470207/normal_6016c1f08a9af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485301/normal_601fb7318d76c.pdfIn PDF document text
    • http://italia-doc.space/childcare_bed_guard_manualju0h0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446377/normal_600818fd671df.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486061/normal_5fc65fd852442.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nodubibinidam.epizy.com/angry_birds_friends_game_apk.pdfIn PDF document text
    • http://pikuvideposem.epizy.com/mivizinagelasedabitizamen.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_off0000d99b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99B 5472 bytes
SHA-256: 6ed232febfe428b32e80fc9df85b3f7fcda0e71436bee53afddc2742d165ed19
font_01_sfnt_off0000ec18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC18 10184 bytes
SHA-256: b549ec76417c6e2e0cacda396319ce5da930b8940ddf838bb881b311168edd32