Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d40316d47232eec…

MALICIOUS

PDF

71.7 KB Created: 2021-03-01 07:32:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ea030fb94b25c6a450cc22be0981786b SHA-1: ba92fbeeba42af2adb13954993368fac82a07134 SHA-256: 9d40316d47232eec90591259801779009be32f0d05ad18fe82e3ede654c7a4cf
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://botokaw.ru/123?utm_term=curso+de+ingl%25C3%25A9s+b%25C3%25A1sico+pdf PDF link annotation
    • http://sellamorem.com/nonefibadejuru28lic.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407064/normal_5fee7775873c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412151/normal_5feafdabb70f0.pdfIn PDF document text
    • http://distornyup.site/tigatabfguvu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488570/normal_60173338f338f.pdfIn PDF document text
    • http://alexandreablog.com/atlas_world_map_booke7e4y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384642/normal_60380e6881a53.pdfIn PDF document text
    • https://josazosanika.weebly.com/uploads/1/3/4/3/134339908/3177591.pdfIn PDF document text
    • http://onlinetyz.xyz/lagu_armada_harusnya_aku_cover_stafabandcae2d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369491/normal_5ffbbf92b8745.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387033/normal_600cde247b5fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379611/normal_602605e83f3fd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416666/normal_5fd681645b6b8.pdfIn PDF document text
    • https://wiwujakibites.weebly.com/uploads/1/3/0/7/130740442/saraxi-mepun.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/xelimewat/pofatupupuwunobemopu.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/content_pillars_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/nejefewanedowodanudugili.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/ninidubisiz.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_off0000d705.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD705 5536 bytes
SHA-256: fa5bdf85949c591e82b02057c4b2822fe2839c3baa2ce724a9baaeed2094c184
font_01_sfnt_off0000e995.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE995 11824 bytes
SHA-256: b8bebc061411d359961690d5bed6323f2242baa6bae65c2aa7ab5e9acfea120a