Malicious PDF — malware analysis report

Static analysis result for SHA-256 50e5d663a2f21eeb…

MALICIOUS

PDF

68.4 KB Created: 2021-02-26 04:08:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a928607ad71a46dbd6fa3c30842502d6 SHA-1: 6279d075a36c803d90556754bbcf37fd008e00e8 SHA-256: 50e5d663a2f21eeb9c82017c3c1fc180e4526c2b65bec18cc7784c70f39394b9
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • 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 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/award?keyword=what+is+a+health+and+safety+culture PDF link annotation
    • http://wbigs.space/zuwuvarudomevexukibekoteqwn3p.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415740/normal_5fe904364c4a3.pdfIn PDF document text
    • http://moshon.space/dijinevotovurzk434.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387577/normal_60065173cb0dc.pdfIn PDF document text
    • https://nosugorowemuz.weebly.com/uploads/1/3/5/3/135327492/nirifezikafo.pdfIn PDF document text
    • http://homeolimp.com/deligonmjwhm.pdfIn PDF document text
    • https://cdn.sqhk.co/vekokoze/cuhcehe/beat_hazard_ultra_apk_mod.pdfIn PDF document text
    • http://telemprom.xyz/ratotunupevazijelgdwv.pdfIn PDF document text
    • http://cheatyou.site/56652461245q73tv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cfee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFEE 5224 bytes
SHA-256: 1fe1127bbc4b4e5d7d2e2a7e55553e9fce3b54d0dba34c7a8e2e8e30a7f2ba75
font_01_sfnt_off0000e1c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C2 10332 bytes
SHA-256: be4d318929f6474636750e5858ef786c71fec0d2bfa2abb462f9b2aa5524eb02

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