Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ff85dc2b5f8c70b…

MALICIOUS

PDF

71.5 KB Created: 2021-02-08 21:44:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f63e1be1c78c06a8c9950a1fcac285e7 SHA-1: c9992573215f54beba45fa2f92cd3d0f36e8e8f8 SHA-256: 8ff85dc2b5f8c70b7cbf866beda2301b82e1565aac3c96e5e03fa17f11f23a8a
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://druttle.ru/wb?keyword=kathi%20video%20songs%20720p PDF link annotation
    • http://gazzsheff.xyz/xuwovusorepirapezuto4j3v.pdfIn PDF document text
    • http://ideaita.fun/descargar_libro_de_parasitologia_veterinaria_quirozif4o5.pdfIn PDF document text
    • http://maslovauto.ru/danza_de_los_gachupinessnzng.pdfIn PDF document text
    • http://lnstagram-verifedbadge.com/jorumumewozx6td.pdfIn PDF document text
    • http://acgmgroup.ru/solidworks_electrical_black_book7nohc.pdfIn PDF document text
    • http://bridgecommerce.com/92954407335tdbuu.pdfIn PDF document text
    • http://smallita.space/19328762198cdz2h.pdfIn PDF document text
    • http://reweder.site/sowevolujujasegupiro7fct.pdfIn PDF document text
    • https://xivupofe.weebly.com/uploads/1/3/2/6/132681771/2661393.pdfIn PDF document text
    • https://masezinonorokun.weebly.com/uploads/1/3/4/6/134685416/jejef-lemimu-midotep-xugukorurir.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/foneniz/libertango_sheet_music_sax_quartet.pdfIn PDF document text
    • http://kibululugavi.epizy.com/javufuvebotanibisepom.pdfIn PDF document text
    • http://fisuzes.epizy.com/71712336687.pdfIn PDF document text
    • http://puxetedategekex.epizy.com/bushnell_northstar_telescope_78-_8846_manual.pdfIn PDF document text
    • http://nexisaxilesa.rf.gd/fimotivelujovaxemen.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_off0000d8de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8DE 5476 bytes
SHA-256: 8a2cdc6746cbfbe9a17ff4ed1caf07d7900104ca5d6d2e059c5adfc3b55de19e
font_01_sfnt_off0000eb95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB95 11256 bytes
SHA-256: de9de04424dce77f4298bdbef2749eaebb5f598cdb300bf5f1fe3a486c040249