Malicious PDF — malware analysis report

Static analysis result for SHA-256 90c6f5e07f5e941d…

MALICIOUS

PDF

66.6 KB Created: 2021-02-19 22:27:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 74bffbe9c8aea571bf58c581f58336ee SHA-1: 530777299401e7d7fd6db57e5cde99d41ca239e2 SHA-256: 90c6f5e07f5e941d93ad17d7756e95e4817219a81718eae478b30eb742de0450
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://jacksth.ru/123?utm_term=gypsy+jazz+chord+book+vol+1+pdf PDF link annotation
    • https://cdn.sqhk.co/tasiteregixo/egcghjh/43180537320.pdfIn PDF document text
    • http://vaworudewu.iblogger.org/sotodadune.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488315/normal_60082630946f4.pdfIn PDF document text
    • https://cdn.sqhk.co/notenirikev/hggjjh8/no_crop_instagram_app.pdfIn PDF document text
    • https://cdn.sqhk.co/bejomewuv/ibktjdM/alienware_desktop_buy.pdfIn PDF document text
    • https://cdn.sqhk.co/jitolado/hhhhhhg/rally_house_hours_independence.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416131/normal_602dd58b49d0c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454049/normal_5fe5bd5cead04.pdfIn PDF document text
    • https://cdn.sqhk.co/mepejuwaj/hmXjjjf/goloposoratubevideviwe.pdfIn PDF document text
    • https://cdn.sqhk.co/tumosirewuw/ggUcqgi/snapseed_editor_tutorial.pdfIn PDF document text
    • https://cdn.sqhk.co/teposodigar/rhh4gg0/godaxodazujepizo.pdfIn PDF document text
    • https://cdn.sqhk.co/rizinutix/jiHKhdv/87952061176.pdfIn PDF document text
    • https://cdn.sqhk.co/foropogajag/haNhIgi/twitter_icon_emoji_copy_and_paste.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://toxabose.epizy.com/kinemaster_cracked_apk_without_watermark.pdfIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/63061125530.pdfIn PDF document text
    • http://guxonijelosaku.epizy.com/guidepoint_singapore_career.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/xexalapirigovofekebum.pdfIn PDF document text
    • http://xujekapowizi.epizy.com/construction_project_scope_statement_example.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_off0000c6a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6A1 5820 bytes
SHA-256: d0d56deb98fe7343e51134d02ffcdbd5d1e490e170136ab27e8640c2178f9b39
font_01_sfnt_off0000da90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA90 10168 bytes
SHA-256: cc649004a6cac6ae52e0161ac18d0fb499489d8979bbbadc7aeb19957ff8f280