Malicious PDF — malware analysis report

Static analysis result for SHA-256 1248f78dcf9c2828…

MALICIOUS

PDF

65.7 KB Created: 2021-03-04 08:43:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 187f0c54a9e6f21a97b8422a5926ba61 SHA-1: 86aa342a487a29816a1970fe9894ce218de0603f SHA-256: 1248f78dcf9c2828873f394c1b61e8039ee5fb5a27835300babda1efb4ff4276
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://xajibur.ru/award?keyword=big+short+movie+netflix PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4389106/normal_5fcefdca2b770.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412775/normal_5fc5c32236b94.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381976/normal_6004e85f24d1c.pdfIn PDF document text
    • http://ninufejuvosixir.22web.org/nespresso_delonghi_nespresso_lattissima_one_coffee_machine_white.pdfIn PDF document text
    • https://cdn.sqhk.co/baresupujar/hfOhfKh/zombie_virus_simulator_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387581/normal_601e15dee51fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420761/normal_6029a7afab874.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/injhseG/sudukigosifevasalorak.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380882/normal_5fe8616081848.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408343/normal_602a88de3eafe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503033/normal_5fe275955974d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410956/normal_6002114c6b86f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458388/normal_601299c30b269.pdfIn PDF document text
    • https://cdn.sqhk.co/dixejetafap/bhfoJgd/801001656.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/lewidovefofunowevimezojo.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/90846776120.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_off0000c64e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC64E 5148 bytes
SHA-256: a0823e5ada31e7c9c31f399e04ce883974d1f20658abd9f7022813bb1756d12f
font_01_sfnt_off0000d7bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BD 9844 bytes
SHA-256: d9a166d82b53ebc3a2319f914968349845f28a30399c4f90edd0d3fb176c62ad