Malicious PDF — malware analysis report

Static analysis result for SHA-256 66770ee1c40d264e…

MALICIOUS

PDF

66.5 KB Created: 2021-02-21 20:58:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 219e5f39943861fe8d57f366b09c5f2c SHA-1: 9319e824c1de9685d0620f67637783311391d377 SHA-256: 66770ee1c40d264ec8c3ba9d5b0c6f5f595c1e559314b80df3ef9860dd6cb507
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://seumenha.ru/123?utm_term=samsung+hw-h550+installation+manual PDF link annotation
    • https://cdn.sqhk.co/wazilisiko/gfBMidh/23995703206.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422918/normal_5ffc816f5887a.pdfIn PDF document text
    • https://vemisalisak.weebly.com/uploads/1/3/1/4/131437925/dibobofunazuguzipoke.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443809/normal_5ff07e02f006c.pdfIn PDF document text
    • http://neuroncraft.online/lubuwufozouuz57.pdfIn PDF document text
    • https://cdn.sqhk.co/jotepomi/Lggjbid/ualberta_eclass_zoom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413473/normal_6011ae25aa24a.pdfIn PDF document text
    • https://vumerajijo.weebly.com/uploads/1/3/2/8/132815742/a4c20a4334aab8e.pdfIn PDF document text
    • https://cdn.sqhk.co/nawafoxobok/zijgcij/dota_underlords_guide_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/ketegobuto/jghqUaz/7253674780.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489734/normal_5fd09f688d96c.pdfIn PDF document text
    • https://legukofa.weebly.com/uploads/1/3/5/3/135318177/3368160.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/bolovopizonuki/basenetidesidilinowa.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/patesu.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/29466242557.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_off0000c6ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6AB 5496 bytes
SHA-256: 8e7cc6c01e278a05df656847c6fb62976ded6d362a7fe61225fe1b82076f239e
font_01_sfnt_off0000d94f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD94F 10564 bytes
SHA-256: 9a9d2f81056a58e112797d9db1eee96f6fe439e7c53faa5e5573ac625d77cb32