Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a2e28c6eaefdc2e…

MALICIOUS

PDF

78.0 KB Created: 2021-02-04 09:01:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4d6ee3ed586fb11ee5ce2a8f1238a28b SHA-1: 0e0fb97a0713233cda6b858ee883098797ede1de SHA-256: 0a2e28c6eaefdc2eb98c947a2192b13ee5c744642aa04a27c268fe4b6089b6e8
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://maypoin.ru/wb?keyword=factors%20and%20multiples%20worksheet%20with%20answers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4529977/normal_600762808e729.pdfIn PDF document text
    • https://cdn.sqhk.co/peluxisomex/1rrWagc/dejexalil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488116/normal_5fe08b01dc4d9.pdfIn PDF document text
    • https://cdn.sqhk.co/joduragenep/Vhgtrid/78429057135.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454684/normal_5fd24172258a1.pdfIn PDF document text
    • http://pop-marketplace.ru/olx_casas_alpinas_em_vendacfm0b.pdfIn PDF document text
    • http://reduslimitalia-official.site/nekejoles8kwad.pdfIn PDF document text
    • http://dsv-trening.ru/car_mechanic_simulator_2018_tire_guideyz762.pdfIn PDF document text
    • http://basvuruizleme.online/home_depot_patio_furniture_assemblyzgw2o.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/jeduzizonox/fareraraka.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/writing_sentences_2nd_grade_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/c_language_compiler_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/xapamupekubekelapogu.pdfIn PDF document text
    • https://s3.amazonaws.com/midizaxopazeji/43515903568.pdfIn PDF document text
    • https://s3.amazonaws.com/fekazudabo/ps2_emulators_for_android_phones.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_off0000f488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF488 5424 bytes
SHA-256: 08f40ac15c1e8d68684042bc7ae14001cc103f93d6db4c5a993de08a65fe78a9
font_01_sfnt_off000106e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106E1 10688 bytes
SHA-256: 472505df001703860ade6dd7bca308eb7c0aee48ed6b0090c2eea6bce46f2192