Malicious PDF — malware analysis report

Static analysis result for SHA-256 92822c42fbf5ce38…

MALICIOUS

PDF

70.8 KB Created: 2021-02-21 18:50:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 444e367033d5b7ec25ec98f9d8dc1079 SHA-1: 0fce49e8cd1c5cf540e0d9bc641e2e4cc9da4a6d SHA-256: 92822c42fbf5ce381481dd781a1bd16070701a61557a70118ba6acdbc4e314b0
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=nwlehighsd.org+middle+school PDF link annotation
    • https://xomikevogonenoj.weebly.com/uploads/1/3/4/7/134743799/5999008.pdfIn PDF document text
    • https://porovepo.weebly.com/uploads/1/3/4/5/134527374/9c6f3583.pdfIn PDF document text
    • http://mirror-x.org/935666381315w28e.pdfIn PDF document text
    • https://zefinefan.weebly.com/uploads/1/3/2/8/132816158/temulozizexi_dunajaxoji_tukusedafe.pdfIn PDF document text
    • http://serodot.iblogger.org/kuvusovefoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427514/normal_601237ceaf685.pdfIn PDF document text
    • https://cdn.sqhk.co/riroxale/djajjkq/spanish_learning_in_english.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460954/normal_601fae7d9de39.pdfIn PDF document text
    • http://littlenat.space/42250225143ghe5k.pdfIn PDF document text
    • http://fakts.design/change_text_color_in_ms_paintqit0t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484126/normal_5ffe493567197.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471474/normal_603017bb4d521.pdfIn PDF document text
    • http://finejubopitugov.22web.org/38582719108.pdfIn PDF document text
    • https://salobomuxalevi.weebly.com/uploads/1/3/1/0/131070078/bosowa-zogoxamege.pdfIn PDF document text
    • http://zesamoa.online/garmin_gpsmap_62s_loading_maps_freewfji3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dotemewu.epizy.com/3823297107.pdfIn PDF document text
    • http://sapifux.epizy.com/which_it_jobs_are_in_high_demand.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_off0000d8e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8E4 5236 bytes
SHA-256: f7a4e7cb04344d487db1aa3c15cc1c8fd165552ca3867269f84969d93fcc5ef8
font_01_sfnt_off0000eaab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAB 10440 bytes
SHA-256: 6e9b385839f333556128bfa890f769aea574d05b75486b8bc58115e880eb495b