Malicious PDF — malware analysis report

Static analysis result for SHA-256 99b804c5d078565e…

MALICIOUS

PDF

71.8 KB Created: 2021-02-28 10:43:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 601c2fd296f3d7069406a4f253e8b73e SHA-1: a88b01501acfaef5d2eeca5d41591f49fee5127c SHA-256: 99b804c5d078565e3600b77c430a4417232d369a291f2038268ea07278f35799
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/award?keyword=foreign+law+degrees+recognised+in+india PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4461523/normal_601ce894e428a.pdfIn PDF document text
    • https://lagonola.weebly.com/uploads/1/3/4/8/134851586/konirediwetaj-xulasanu-kewopewikelur-mejaxuretefe.pdfIn PDF document text
    • http://zevibeponakat.getenjoyment.net/fepesuxunuton.pdfIn PDF document text
    • https://todurudivi.weebly.com/uploads/1/3/4/3/134344361/5ebdc2.pdfIn PDF document text
    • https://xivunububan.weebly.com/uploads/1/3/0/9/130969166/8925483.pdfIn PDF document text
    • https://vanakiti.weebly.com/uploads/1/3/5/3/135323710/mekazanotubet_novozudo_kikito_kawigipagu.pdfIn PDF document text
    • http://xafesuvorolivig.scienceontheweb.net/how_to_improve_sat_reading_by_100_points.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470685/normal_602edfb920880.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gefuxexo.epizy.com/can_i_day_trade_on_coinbase_pro.pdfIn PDF document text
    • http://nijuxejo.epizy.com/94506051210.pdfIn PDF document text
    • https://s3.amazonaws.com/luborinizu/16965934744.pdfIn PDF document text
    • http://kojoduperoko.epizy.com/new_testament_bible_study_lessons.pdfIn PDF document text
    • http://xugonowelimije.epizy.com/7469808572.pdfIn PDF document text
    • http://lerezivopo.rf.gd/media_clip_pro_video_er.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_off0000df6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF6B 5156 bytes
SHA-256: 3c83455a8594232c62b13a7d17196993314f97d4f401fa52acc567c5b9c0e4ac
font_01_sfnt_off0000f116.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF116 9704 bytes
SHA-256: f248b8f6fe433c8920638d0ee6807f267f333ff4ecfc147440e499383f0d047e