Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e51aa4740984363…

MALICIOUS

PDF

67.2 KB Created: 2021-03-03 15:45:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 5c5c9f9154ea585f4872bc142c9b79bf SHA-1: e63f92ec8caacf07d32d9c1a8e7d90f78a8557ab SHA-256: 2e51aa474098436342517e2e5e64fe1399b34b75de1cfe3d2e77c00e10a3ad64
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://zajinet.ru/award?keyword=kjv+dramatized+audio+bible+online PDF link annotation
    • https://serekarivevug.weebly.com/uploads/1/3/1/4/131407867/romazufesatital.pdfIn PDF document text
    • https://doritader.weebly.com/uploads/1/3/4/8/134885844/4217461.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377656/normal_5ff2826600897.pdfIn PDF document text
    • http://rafale.store/gulilefumikamogidiwyrip6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382209/normal_60365d3836933.pdfIn PDF document text
    • https://vufobuvi.weebly.com/uploads/1/3/1/1/131163959/36e2fcf9009d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374177/normal_601bfbf3e04bd.pdfIn PDF document text
    • https://xemilesexevig.weebly.com/uploads/1/3/4/2/134266110/jagerebukifanonuga.pdfIn PDF document text
    • https://rokerisokexojud.weebly.com/uploads/1/3/0/7/130738924/wumuwamefirizu_navexij_raxuxupu.pdfIn PDF document text
    • http://kekijojovif.sportsontheweb.net/emotional_intelligence_2.0_book.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/padadutiseni/zozojibukikotagusix.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/zawimufisawune.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/fenizumizulujus.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_off0000cc53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC53 5088 bytes
SHA-256: b6abe09e111c2c103ae70765dd376ea358fbc99963ec255c72e3ca0edc7b18a3
font_01_sfnt_off0000dd9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD9F 10108 bytes
SHA-256: d8b360fc1367253ae1fd2e32ece7c16c0bdd15b690b57a03a6f650b9ae6f7892