Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f243b69f33b4378…

MALICIOUS

PDF

72.0 KB Created: 2021-02-16 06:56:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: aac329f405b26c1fd824fc9450e8850d SHA-1: 48df2e55c5da1a96f41d2b47c630922aca5722ab SHA-256: 4f243b69f33b4378e16a5f5cf628b4c453b6e94471ea33c89bc8526b0b6fed3d
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://leonvi.ru/wb?keyword=interior%20design%20diploma%20courses%20in%20kenya PDF link annotation
    • https://cdn.sqhk.co/kejofuvata/Wjchchb/poster_maker_studio_graphic_design_poster_maker_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/tinipuded/1w7vNGW/6356708836.pdfIn PDF document text
    • https://cdn.sqhk.co/vidikusupegu/hibfheL/fanepagagum.pdfIn PDF document text
    • https://cdn.sqhk.co/vewimidipiv/haEogiz/vijemaxepu.pdfIn PDF document text
    • https://cdn.sqhk.co/wekaradukuve/idQjcUh/one_color_challenge_wheel.pdfIn PDF document text
    • https://cdn.sqhk.co/xujurovemu/igdyide/accurate_altimeter_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481058/normal_6011625abd5ee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394079/normal_5fce73b0b894d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vudujufilax.epizy.com/rofevudetozexivok.pdfIn PDF document text
    • http://fobupozomorefiw.epizy.com/reziru.pdfIn PDF document text
    • https://s3.amazonaws.com/lomuper/80414985094.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/rusakoxusikokegulila.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/botewosojujuwijagusole.pdfIn PDF document text
    • http://popedufi.epizy.com/best_hd_cool_wallpapers_for_android.pdfIn PDF document text
    • http://jadupapobixe.epizy.com/3767688266.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_off0000dbe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE7 5496 bytes
SHA-256: d21f9882611fca3dce9e12096260a368f47da6b59b5475d20c358d0649343020
font_01_sfnt_off0000ee8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8C 10636 bytes
SHA-256: 7f89e26a0ce59b20272015fd15cb276cb11dbe3dc456fe34bac90c0e7c7bb5f0