Malicious PDF — malware analysis report

Static analysis result for SHA-256 b87c94ac05f4ae8d…

MALICIOUS

PDF

76.1 KB Created: 2021-03-03 10:42:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 430f58e867acbc9ff52ffdc74958a950 SHA-1: d1bd1c39e711b3f6b8932fbf5d5800396ed9446d SHA-256: b87c94ac05f4ae8d19a046c2d22544b6c14275be3ab656758fc016ff12311506
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://seumenha.ru/wix?keyword=babyletto+crib+manual PDF link annotation
    • http://newyearshop.site/127391309342ivo1.pdfIn PDF document text
    • https://cdn.sqhk.co/vitimosugu/dg8qLdl/laluvonuloribofuduzogozun.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484103/normal_5fca93214ebef.pdfIn PDF document text
    • http://tortomsk.ru/lakutiferasubexuduuecha.pdfIn PDF document text
    • https://cdn.sqhk.co/tobijoge/hgfqhjb/mafia_city_of_lost_heaven_best_mods.pdfIn PDF document text
    • http://mixezitubut.mygamesonline.org/pifepajuxegigejumane.pdfIn PDF document text
    • http://glossywp.online/weed_eater_blades_stihl26wny.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kipejefanowisu.atwebpages.com/gobodex.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/dobibawakira.pdfIn PDF document text
    • http://jujageritoxo.atwebpages.com/gudofojigunideluxeg.pdfIn PDF document text
    • https://s3.amazonaws.com/gavapozalilup/34301748627.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/funeral_service_program_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/football_manager_2019_dortmund_guide.pdfIn PDF document text
    • http://zitasixan.atwebpages.com/dracula_book_summary.pdfIn PDF document text
    • https://s3.amazonaws.com/xufaxoferugod/report_dangerous_driving_uk_online.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_off0000ef20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF20 5056 bytes
SHA-256: e154419353c0e170d49e84f9291827eae8972bdc2a117137f8c39dad112c6f9b
font_01_sfnt_off00010048.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10048 10424 bytes
SHA-256: bb82d2f8f0f8657ada41ec4600eb2ceed5b3b6ce7a95baa5988162044f661cc4