Malicious PDF — malware analysis report

Static analysis result for SHA-256 151940ba9ddfd87d…

MALICIOUS

PDF

76.0 KB Created: 2021-02-27 12:19:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 17d24fd7bd78cbdb26c07178bbd2998e SHA-1: a40b6aa065a99ca648d01ca14ebbe1c835fb8479 SHA-256: 151940ba9ddfd87dd50a5170101bb2a87d89547fd7ae211ee500593756d27f35
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://dugedepap.ru/award?keyword=how+to+change+the+battery+in+a+casio+wave+ceptor PDF link annotation
    • https://nafusulujaj.weebly.com/uploads/1/3/4/5/134596397/8277a555.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450039/normal_600a4ad648c74.pdfIn PDF document text
    • http://rugegav.mywebcommunity.org/star_trek_movies_cast_2016.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495059/normal_5ffa36812ea60.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/what_season_of_vampire_diaries_did_elena_and_damon_break_up_in_real_life.pdfIn PDF document text
    • https://cdn.sqhk.co/sovajepuxe/3jdhfih/nonasufiluzujigukupi.pdfIn PDF document text
    • http://bumasujofoj.getenjoyment.net/siwuxujububazaribaraketoz.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/sHjjjeP/posomulub.pdfIn PDF document text
    • https://regivuno.weebly.com/uploads/1/3/1/0/131070843/milaxabivawefo.pdfIn PDF document text
    • https://sewusadata.weebly.com/uploads/1/3/5/4/135401056/nujinibez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374699/normal_6033716f4d3f9.pdfIn PDF document text
    • https://cdn.sqhk.co/jenetuwuda/haC0LRW/race_car_coloring_book_print.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470979/normal_5fc59c039b58a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404297/normal_6002d54363c33.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/tobito/37234004647.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_off0000ec61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC61 5516 bytes
SHA-256: 6076abb5fc041abd5314f0eab7a27a192c938343cf4896ba3fd703bdf477af6c
font_01_sfnt_off0000ff3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF3B 10392 bytes
SHA-256: b6474388cb4f93eabed7c76204a5b06f4faa97a3d958ace7c9d2b9834e9078ff