Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a6f581d0f6c2675…

MALICIOUS

PDF

73.0 KB Created: 2021-02-13 02:30:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9bbd9f23ae1a9250a499f3a86619cc6d SHA-1: f122f7f0592eb3915261d6ff1546b8479a4ae2c6 SHA-256: 7a6f581d0f6c2675b8b6518ff4b1d761ab7becd3488cc5beb2202c42e5c02046
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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=alien+streams+not+working PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4500887/normal_5fd99a5732784.pdfIn PDF document text
    • http://jonezuno.22web.org/mavapuxigomupa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420260/normal_5fc7ffad0a350.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447258/normal_5fcd0e640f184.pdfIn PDF document text
    • https://cdn.sqhk.co/padixemugex/gG63SrV/90641945923.pdfIn PDF document text
    • https://cdn.sqhk.co/lolajelor/ahiicxD/default_music_player_windows_10.pdfIn PDF document text
    • https://cdn.sqhk.co/diwiporeb/baibLib/vitize.pdfIn PDF document text
    • http://freedate18.xyz/sasabatfmd2h.pdfIn PDF document text
    • http://lg-copyright.com/milunazovod0s57d.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/mukut/obusforme_back_massager.pdfIn PDF document text
    • http://bapiwixobenilax.rf.gd/dudixigosunerapeloneguw.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/lalofaxapimuwowoxifaxuzo.pdfIn PDF document text
    • http://povovudajax.rf.gd/school_days_unlimited_money_apk.pdfIn PDF document text
    • http://nafabumawo.rf.gd/agent_sai_srinivasa_athreya_bgm_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/gomif.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/90220921725.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_off0000e293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE293 5152 bytes
SHA-256: 8bf725e3a18683b43c4e0cab466260e5d0a5aae78976d3e32f9bceb65922800c
font_01_sfnt_off0000f415.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF415 10308 bytes
SHA-256: 40e82a028c0f5f2b8863908e9a810a6d37ac6d5f8e5085edf68b895ffdd65048