Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb1085cc1e46f29d…

MALICIOUS

PDF

77.9 KB Created: 2021-02-26 23:13:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7b0c0369f4634bbbb50773bd9ec91c98 SHA-1: dc4c0a9da5e61037dab55762ace8fa7de23b4545 SHA-256: eb1085cc1e46f29d53ea367b0cdd471ac84364060aa222332e2eba242223fbc6
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://mezovuduw.ru/123?utm_term=how+to+verify+a+cashier%2527s+check+has+been+cashed PDF link annotation
    • https://cdn.sqhk.co/xenumobavun/u2ibAgf/summoners_war_promo_codes_apple.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370062/normal_6004b6dc10ada.pdfIn PDF document text
    • https://cdn.sqhk.co/nikofejujel/gjfgijd/33262622464.pdfIn PDF document text
    • https://cdn.sqhk.co/siboxowimu/iaqchis/draw_n_road_indir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487007/normal_60366e3eceecf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496148/normal_5ffe1d2171807.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461245/normal_5fed2e74d8880.pdfIn PDF document text
    • http://nutristrike-shop.ru/buwonijakodojaminukegofzbx1x.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479446/normal_5fcad7103815f.pdfIn PDF document text
    • https://cdn.sqhk.co/xejexeremiso/QTjf5DZ/cartoon_ringtones_for_free_download_to_phone.pdfIn PDF document text
    • http://istlan.fun/macrocephaly-_capillary_malformation_syndrome_symptomsehp4f.pdfIn PDF document text
    • http://vnds-super.space/dokigofux0vb19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469359/normal_5feeb77245d14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477147/normal_601ef2565b04e.pdfIn PDF document text
    • http://bubble1.space/tuzekedk0g7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462046/normal_600277ef13924.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370092/normal_603870ea25870.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413842/normal_5ff4b7809f851.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000f312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF312 5528 bytes
SHA-256: eaa74822ccb1bd5fcce0cf6650320e540c74d552865125821fbf6c1f22819004
font_01_sfnt_off000105fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105FA 10676 bytes
SHA-256: 5ff9aece52addf5ca1fee9dc6ba38080c77974f3885e39d9c0514bc0ec436132