Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca829b8a0f15a05f…

MALICIOUS

PDF

72.3 KB Created: 2021-02-26 21:15:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a8cc9a132b67e8ceaa157ded03cd8f2a SHA-1: 9ebdf54c4d8810dcaea150c0709ccb62fed4b211 SHA-256: ca829b8a0f15a05fa602af1bd8f887f0d1676ee07ecd2f71caf9c010713c2dc7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xajibur.ru/wix?keyword=sat+ii+biology+practice+test+pdf PDF link annotation
    • http://sitebomobegux.sportsontheweb.net/nelozi.pdfIn PDF document text
    • http://funogager.22web.org/sql_server_database_for_practice.pdfIn PDF document text
    • http://mivofalo.22web.org/ubuntu_for_virtualbox.pdfIn PDF document text
    • http://fullhp.info/one_ok_rock_ambitions_320kbpsmsku8.pdfIn PDF document text
    • http://centerbluebadge.com/android_games_apps_freef9w3k.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390383/normal_5fc6ce7e91e2f.pdfIn PDF document text
    • http://limecash.xyz/82282818556lcfa2.pdfIn PDF document text
    • http://guburifesujera.22web.org/96505772210.pdfIn PDF document text
    • http://jegewuzewan.iblogger.org/winrar_free_android.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roniderekatitim.rf.gd/4553564023.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/21623427010.pdfIn PDF document text
    • http://dizojavabur.epizy.com/7391313784.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/pafunebigut.pdfIn PDF document text
    • http://maxegore.epizy.com/71338006835.pdfIn PDF document text
    • http://kabumosubeno.epizy.com/futedigo.pdfIn PDF document text
    • http://dujedeni.epizy.com/74479011956.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/50430587877.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/35036003887.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_off0000dc1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC1A 5668 bytes
SHA-256: 002e4ed59120c6b4543150ee94d0898e5b37ff0e65dd69cce6e1fece623c725b
font_01_sfnt_off0000ef75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF75 10716 bytes
SHA-256: 70ff69a9f71eab8ca0ab80a964baa1ca0d12f81d473cbb6b8648faee158fdb40