Malicious PDF — malware analysis report

Static analysis result for SHA-256 766966b4abc83a1a…

MALICIOUS

PDF

70.1 KB Created: 2021-03-03 05:44:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0908de0a79435d2f82721af3c374ab41 SHA-1: 65809a2e2920b2b39f06adaf605cf36245f3b08d SHA-256: 766966b4abc83a1a73b3dfcb75a5badd091f40b5cf0f9e82ae1e768d1eb6936c
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/award?keyword=emergency+medicine+jobs PDF link annotation
    • http://afracheat3.xyz/utorrent_free_for_desktopx9uou.pdfIn PDF document text
    • https://cdn.sqhk.co/kapipota/hehahhQ/suwozeza.pdfIn PDF document text
    • http://pojapusevipuzu.mypressonline.com/bakukuved.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/eiiW0sY/karonixudurex.pdfIn PDF document text
    • http://nubolutlion.xyz/zizomeve92hw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447646/normal_602c76c6702dc.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxofidipo/fjcmQJ7/fabirewag.pdfIn PDF document text
    • http://latencfsrt.space/zanimibasodigorumamixico1lf.pdfIn PDF document text
    • http://help-feedback-amzn3.xyz/freestyle_lite_error_3_messageabcw8.pdfIn PDF document text
    • https://cdn.sqhk.co/reriwoduriju/gj4vFhg/87861842512.pdfIn PDF document text
    • http://uptodate.site/48692992653cjwtn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464070/normal_600df4021406d.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/pajukovuxetu/sample_performance_appraisal_form_comments.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/life_fitness_9500hr_elliptical_parts.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/ben_10_games_3d_free_pc.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_off0000d421.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD421 5292 bytes
SHA-256: 2bc6c965bfe5b4e1d2eb6989b99952781c1e58498bc4fe5d1161d1c6eaaeefc6
font_01_sfnt_off0000e61e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE61E 11540 bytes
SHA-256: 88f80cffb1119aba6f0713908db18b3af407886ef29e463a657e22c28ea717d5