Malicious PDF — malware analysis report

Static analysis result for SHA-256 c220295f8824d8f4…

MALICIOUS

PDF

73.3 KB Created: 2021-01-26 04:04:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7815b580acf05fbb607c087663d3c2b0 SHA-1: 449df6115a99a6d83c1a62adb66c0206787121f2 SHA-256: c220295f8824d8f4f77f5729e8d487cafaa9569a8298449d448f3d020d91b910
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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://leonvi.ru/wb?keyword=new%20areas%20of%20research%20in%20law PDF link annotation
    • https://cdn.sqhk.co/lizupasepafu/Tjhjchc/35258959895.pdfIn PDF document text
    • https://cdn.sqhk.co/jasowipe/mKRoGid/invasion_definition_ks2.pdfIn PDF document text
    • https://cdn.sqhk.co/muligumixe/8hfje9g/randal_s_monday_obb_download.pdfIn PDF document text
    • http://reduslimitalia.website/car_parts_warehouse_usa93nyv.pdfIn PDF document text
    • https://fasilusizewolas.weebly.com/uploads/1/3/5/3/135313848/jifobakiwako.pdfIn PDF document text
    • https://cdn.sqhk.co/kimejijomaki/qKgchge/bingo_blast_kastaplast.pdfIn PDF document text
    • https://kazugimopizefew.weebly.com/uploads/1/3/1/4/131406381/xotizovewijatuxuro.pdfIn PDF document text
    • https://cdn.sqhk.co/fosulavale/jdCRhfy/29242545180.pdfIn PDF document text
    • http://detonic-romania.website/84698337454v7yij.pdfIn PDF document text
    • https://dadojunolibete.weebly.com/uploads/1/3/2/6/132683289/gesomixamiwozanubezo.pdfIn PDF document text
    • https://cdn.sqhk.co/mugetawelumi/mKgfOFR/zatekukopar.pdfIn PDF document text
    • https://cdn.sqhk.co/xaxovowupofa/j1iehap/mens_superhero_christmas_jumper.pdfIn PDF document text
    • https://cdn.sqhk.co/kapokosop/7LnFiel/playroom_organization_categories.pdfIn PDF document text
    • https://fanarise.weebly.com/uploads/1/3/4/3/134377412/jikovetuwoso-gunutap.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/nasitevu/oblivion_reloaded_6._5.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_off0000e3fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3FA 5032 bytes
SHA-256: d10f443e6f4e8d126174a0745255312841bad484a554005ba42ab1e306f33b85
font_01_sfnt_off0000f52c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF52C 10404 bytes
SHA-256: 479de404a46b2d1c3e3d712e8808260170e36bc62c11a61a163767e0c49ac551