Malicious PDF — malware analysis report

Static analysis result for SHA-256 5115b4e08776d7aa…

MALICIOUS

PDF

78.3 KB Created: 2021-02-24 23:04:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: accc6c7ae070de270accb058b177d1b7 SHA-1: 87c399bdf536e89d9e956d98b91b5dec3ac17cfa SHA-256: 5115b4e08776d7aaf64b50bbb0edea79509c75d24b0d64457502bddc1a85634e
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://jacksth.ru/123?utm_term=descripcion+fisica+de+los+personajes+de+el+amor+en+los+tiempos+del+colera PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366405/normal_5fcd1663c22f6.pdfIn PDF document text
    • http://casbah2point0.com/the_twelve_steps_and_twelve_traditions_of_narcotics_anonymousctirk.pdfIn PDF document text
    • http://mishgen.com/276547250008r2t4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367668/normal_5fe2489d346a3.pdfIn PDF document text
    • http://raguvigawak.mypressonline.com/gumorofitojir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421478/normal_602539087648e.pdfIn PDF document text
    • http://lnstagramcopyrighthelps.com/introducing_second_language_acquisition_perspectives_and_practices87ryv.pdfIn PDF document text
    • http://adminhalil.com/jugumavoj8pwb.pdfIn PDF document text
    • http://nuloriwilorij.scienceontheweb.net/instrumentos_para_la_recoleccion_de_datos_concepto.pdfIn PDF document text
    • http://autobaff.xyz/words_their_way_primary_spelling_inventory7f1y1.pdfIn PDF document text
    • http://sevezor.scienceontheweb.net/how_to_send_score_reports_gre.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/31120719557.pdfIn PDF document text
    • http://pycnidwzxc.info/2411138046fce56.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369920/normal_60081a37ea24a.pdfIn PDF document text
    • http://kenugizi.getenjoyment.net/el_coronel_no_tiene_quien_le_escriba_personajes_wikipedia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379855/normal_600a2761a50ea.pdfIn PDF document text
    • http://1cats.space/vejifojemulotaveteru7rbku.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/tarajix/what_flip_phone_is_compatible_with_verizon.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_off0000f18b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF18B 5376 bytes
SHA-256: ae80699551bc62ef9d30279516297ef80f93fc71323d2e5eb8154de22a8f9da2
font_01_sfnt_off000103cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103CB 11648 bytes
SHA-256: c4160f9ddc56437a50ab2c349f4bbccd492a874eb09034bb5a6130fc63a0f66b