Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a79635a5ac103f3…

MALICIOUS

PDF

71.5 KB Created: 2021-02-25 15:56:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d1385a8e9094ccde640b4008d9097ce2 SHA-1: 07aa29b7ab2a4d75f7a58f76a674bed7ce351635 SHA-256: 2a79635a5ac103f305ebbf27424b28d5d2ed79fd51b877fd957903251ce8ac57
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/award?keyword=what+does+fire+and+ice+condoms+feel+like PDF link annotation
    • http://talakam.space/bomba_hidraulica_de_paletasje90p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426813/normal_5fdc3a6f8d4f1.pdfIn PDF document text
    • https://cdn.sqhk.co/naliwanik/ifjihjz/mutewitokinoro.pdfIn PDF document text
    • http://punejew.mygamesonline.org/kixijorubulidot.pdfIn PDF document text
    • https://nevedafixi.weebly.com/uploads/1/3/1/3/131398567/vezatoliluse.pdfIn PDF document text
    • http://floradoma.net/fowigipejimim3v7zb.pdfIn PDF document text
    • http://natorg.fun/message_tone_app_for_mobilekzag3.pdfIn PDF document text
    • http://ravujonawugip.22web.org/64983706532.pdfIn PDF document text
    • https://cdn.sqhk.co/remonupode/hfQZihy/97537676756.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jisijuvod.myartsonline.com/ximijupuzezivogovo.pdfIn PDF document text
    • http://vujuvisesakok.myartsonline.com/23103860776.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_off0000d9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9C7 5340 bytes
SHA-256: f6a74f024690f4a76171801101ac68a1aa96bbfae28e8bc2b516c421ddbc8451
font_01_sfnt_off0000ebd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD0 11112 bytes
SHA-256: dad8fa06affeb73dd3bb4909c32a31795309bf3be2b1f1687d4d2785d25ec91a