Malicious PDF — malware analysis report

Static analysis result for SHA-256 336113f4528e20d1…

MALICIOUS

PDF

69.4 KB Created: 2021-01-26 04:47:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8e76e92a853161da6c2921026df61481 SHA-1: 1dda9201b63174fa18fbc6fa3171107c1887309b SHA-256: 336113f4528e20d1b05eab177bb1d0669d63a7b40c35761b2e748764c0911dea
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wb?keyword=closest%20smashburger%20near%20me PDF link annotation
    • https://cdn.sqhk.co/retobumoki/Ric9ZVc/lucky_kannada_film_songs_mp3_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490542/normal_5fce3337d8b0b.pdfIn PDF document text
    • http://rankingcoach-apps.com/affirmation_cards_for_kidsystoh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456369/normal_60052a3ee6d06.pdfIn PDF document text
    • http://lnstagramcopyrightcenter.com/bible_coloring_book8zb5n.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452376/normal_5ffa7863c9f5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385217/normal_5fd67a24eba91.pdfIn PDF document text
    • https://cdn.sqhk.co/bitizulokiva/sCcidjh/18464986826.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://funazowo.rf.gd/rivukeloxurima.pdfIn PDF document text
    • http://danidagibi.epizy.com/comparative_grammar_worksheet.pdfIn PDF document text
    • http://kirogebi.epizy.com/57702791095.pdfIn PDF document text
    • http://tamazodatitemi.epizy.com/articles_of_incorporation_maryland_form.pdfIn PDF document text
    • http://xegebasitez.rf.gd/android_10_redmi_note_7_release_date.pdfIn PDF document text
    • http://vezoxonu.epizy.com/fibalipaf.pdfIn PDF document text
    • http://fejusadifidexi.epizy.com/teraw.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_off0000d23d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD23D 5144 bytes
SHA-256: abaf07dbe0f167e68caf759edfe746c9a530207e63c50bc96b907edd89433852
font_01_sfnt_off0000e382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE382 10980 bytes
SHA-256: ef1316329d788db852744de45b2486e5b8bcd7388d4ff8707d0264fa2ffec9f7