Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2c470d3764e5c17…

MALICIOUS

PDF

73.9 KB Created: 2021-03-01 12:53:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1182dc17a7cfda4a559bb5b36d9398c8 SHA-1: 00930bcf4fc6efa184c1bcf11a9f989ce99c5acf SHA-256: a2c470d3764e5c1794a1f0b86d91d2f9ab44ab577926bef152cb29c0e4cc2904
136 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
  • 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://mezovuduw.ru/award?keyword=is+the+stock+market+open+today+and+tomorrow PDF link annotation
    • http://lnstagramservicecopyrights.com/26610560907mp2c1.pdfIn PDF document text
    • http://lnstagramcopyrightmanagement.com/76238666509ppwxe.pdfIn PDF document text
    • http://eglo.club/energia_eolica_2019ixy5v.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416150/normal_5ff57a1bcabe1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383917/normal_603ba5175ae82.pdfIn PDF document text
    • http://sozaxasofurem.22web.org/benivudajozoz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393345/normal_5ffa3c1c321a4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401525/normal_5fee3f46f3882.pdfIn PDF document text
    • https://cdn.sqhk.co/wufevinek/8iaNiiK/mit_application_essays_examples.pdfIn PDF document text
    • http://table-wait.com/nonaxotirez6ub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468571/normal_5fc8b24076836.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444864/normal_5fd7daecaa4e4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zikoliduxa.atwebpages.com/effective_c_book.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/world_of_darkness_slasher.pdfIn PDF document text
    • http://vimixof.onlinewebshop.net/is_tp_link_good_wifi.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_off0000e3ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3ED 5476 bytes
SHA-256: 10d2e31e043f7074519753f108e69045ec8621c50c080155cf347955f3f26f29
font_01_sfnt_off0000f679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF679 10548 bytes
SHA-256: ef7a6236c031c513bdb5072c78a11fb89aa6a419d97ca66973e0ffe311688ca7