Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ad84f52e68d3c62…

MALICIOUS

PDF

75.1 KB Created: 2021-03-01 14:21:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 0c5e6ad6aae7c578cd0ca6ca827e9af5 SHA-1: 47085c05bf724f34958e7a861c97443b14328d08 SHA-256: 1ad84f52e68d3c62d167addbfab1c2b2064e5c77a207b7289a26279ca466ff5d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://maypoin.ru/award?keyword=commercial+refrigeration+for+air+conditioning+technicians+3rd+edition+pdf PDF link annotation
    • http://kudretbozaci.com/ccleaner_pro_apk_terbaru_2018jtr1t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474759/normal_60159aaba8c8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370746/normal_60295c534c5e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486981/normal_6022326c2b598.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384046/normal_5ff65e6b9b495.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501989/normal_5fd93b09ce038.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369161/normal_5fd1bd10e9aa5.pdfIn PDF document text
    • http://sosed.market/atmos_clock_for_sale_south_africaeo06k.pdfIn PDF document text
    • http://qiwi-wallet.online/tamil_christmas_dance_songs_2018gx1ck.pdfIn PDF document text
    • http://ukranews.icu/how_to_reset_a_netgear_ac1900t40j3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369173/normal_6000fa9942e51.pdfIn PDF document text
    • http://inostrana.com/bluedio_hurricane_turbine_t2_plus_manualz0zl8.pdfIn PDF document text
    • http://detonic-ordina.website/gefatovezugad4bn9g.pdfIn PDF document text
    • https://popibixa.weebly.com/uploads/1/3/4/7/134745137/2862236.pdfIn PDF document text
    • https://wejumarokurefa.weebly.com/uploads/1/3/0/7/130776247/838349.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/sagotomagin/77567842762.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/56804934908.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/inclined_plane_analysis_physics_classroom_answers.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_off0000e728.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE728 5636 bytes
SHA-256: 50339887c83c9f8e8a1da24d7249d5d2d4308394482a8f93fad1e9c2db6f31c3
font_01_sfnt_off0000fa26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA26 10704 bytes
SHA-256: f2203348347fa353aa08e48a3a0458aebfed02ca2cd5d626f1a9453801a03afd