Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c25586d277e788c…

MALICIOUS

PDF

71.7 KB Created: 2021-02-12 20:54:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1f54add09636b0b2eda7fd7da7024588 SHA-1: 5c358d408b2692e0812dc85d944a457b13c65bad SHA-256: 2c25586d277e788c00c491a8957c3229aede1d7948967e63cdc8af57abb01553
184 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=omnitech+shredder+not+turning+on In PDF document text
    • http://store50off.info/astute_graphics_crackm5ujw.pdfIn PDF document text
    • https://wunogalabapa.weebly.com/uploads/1/3/4/6/134603674/d8854.pdfIn PDF document text
    • http://afracheat2.xyz/glimpses_of_world_history_banglatae6j.pdfIn PDF document text
    • http://potenciy.xyz/emotional_songs_2018o59yx.pdfIn PDF document text
    • http://matras-24.ru/melatowagumevojoxikevunuv2w4g.pdfIn PDF document text
    • http://tizezs.xyz/10707140377jkex6.pdfIn PDF document text
    • http://fringigejy.site/equilibrium_constant_problems_and_solutionsxddn2.pdfIn PDF document text
    • https://cdn.sqhk.co/kupovite/hAhcMcs/ivry_psvr_free.pdfIn PDF document text
    • http://portkamesto.site/imagenomic_noiseware_professional_free44p7b.pdfIn PDF document text
    • https://cdn.sqhk.co/zukuxenopo/Z9ie5gh/dagukefofele.pdfIn PDF document text
    • https://cdn.sqhk.co/xogovofofi/jhgcjje/sesimovowib.pdfIn PDF document text
    • http://particuliers-societegenerale.xyz/proyecto_de_grado_arquitecturabd4pi.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/niwotipugonuvoz/kutilanige.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_off0000dd22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD22 5136 bytes
SHA-256: deed89c8a984b2ae48fb25520a1ceda85d3d3726d4b2dfbf2fcbceac6e15d500
font_01_sfnt_off0000ee6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE6F 10420 bytes
SHA-256: 39f0e2180de10712f9861d332e2ea1ed6d8297b6b489bad4d717d2a84e9c5b5c