Malicious PDF — malware analysis report

Static analysis result for SHA-256 28f8482c0df3e415…

MALICIOUS

PDF

69.4 KB Created: 2021-03-04 03:10:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3ecd56f41edd0316e79e085c2024d052 SHA-1: 0ebf572ac34043cbabde76671f23e51891ebecec SHA-256: 28f8482c0df3e415b8196ed6eb4318178786c6caeef28d9a8a3c3c49ee66bacc
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=becoming+a+master+student+15th+edition+pdf+free PDF link annotation
    • http://loxuzemifa.iblogger.org/tipubemomulotoli.pdfIn PDF document text
    • http://vaxuzorokolate.iblogger.org/glioblastoma_multiforme_idh_wild_type_grade_4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403533/normal_600d282f992ec.pdfIn PDF document text
    • http://nextauto02.ru/bhumija_janki_janak_suta_sita_songuhj88.pdfIn PDF document text
    • https://sapobukemofox.weebly.com/uploads/1/3/5/9/135974899/lagojali.pdfIn PDF document text
    • http://jokixulu.iblogger.org/9276759308.pdfIn PDF document text
    • https://matamelo.weebly.com/uploads/1/3/1/3/131384575/datilugi.pdfIn PDF document text
    • https://sagajogesef.weebly.com/uploads/1/3/5/3/135398815/zivam.pdfIn PDF document text
    • https://tonezukem.weebly.com/uploads/1/3/5/3/135348251/zezefunalud.pdfIn PDF document text
    • http://filfex.ru/91476361617lkdqi.pdfIn PDF document text
    • http://gufutaca3.xyz/125426767127ivhz.pdfIn PDF document text
    • http://marketitaly.info/7051874718jxa3z.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427523/normal_5ff447057d407.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bidilud.rf.gd/celulas_caliciformes_intestino_grosso.pdfIn PDF document text
    • http://mijekobafenado.rf.gd/dream_meaning_snake_bite_left_hand_in_hindi.pdfIn PDF document text
    • http://gabixemi.epizy.com/bullfrog_lake_powell_fishing_report.pdfIn PDF document text
    • http://bomepexajusopa.epizy.com/42447588869.pdfIn PDF document text
    • http://sowinoto.epizy.com/sadifemanazuzurapolurofi.pdfIn PDF document text
    • http://fasufigosekuwuw.rf.gd/number_the_stars_test_with_answers.pdfIn PDF document text
    • http://fujebudavitasoz.epizy.com/what_is_inscribed_on_the_georgia_guidestones.pdfIn PDF document text
    • http://bowibimedex.rf.gd/xidodakujosozofolatotefo.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_off0000d10c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD10C 5764 bytes
SHA-256: 00e0838ed72a7369aae2641f45dfa92196e431c155f37200ff9b8d961b1a9c8d
font_01_sfnt_off0000e489.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE489 10364 bytes
SHA-256: 2cea0660145e185b5a49742bb9c8a300804125212c52d3d90cb96c95fd768d73