Malicious PDF — malware analysis report

Static analysis result for SHA-256 19454431474588c8…

MALICIOUS

PDF

60.5 KB Created: 2021-02-14 23:02:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a6e6b4b3b851f5ebfdf6f8f2e4e7b76a SHA-1: e50508bc3cba6acadddbfcd677c8d029e55b1907 SHA-256: 19454431474588c876235a8c611ec34c5197d8f4d67d87630f9737ae6241a1c8
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://baarspo.ru/wix?keyword=the+grand+tree+quick+guide PDF link annotation
    • http://ogranicbio.fun/calligraphy_tutorial_bookp1akl.pdfIn PDF document text
    • https://cdn.sqhk.co/vagewovupug/ibieagc/xepeji.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490724/normal_5ff8f1cfcdf70.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404121/normal_601fa884b31fa.pdfIn PDF document text
    • http://maewallace.com/i_remember_mama_tv_showr8cwx.pdfIn PDF document text
    • https://cdn.sqhk.co/lilokimoz/eKjyghH/corex_fitness_whitley_bay.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473616/normal_5fd0489ad495a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461791/normal_601c99c05ed2e.pdfIn PDF document text
    • http://kupivse.xyz/3920098904057bj5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392656/normal_5fcf6ef9b0a5b.pdfIn PDF document text
    • http://unreguezff.rest/758058628522vwa8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486206/normal_6027bbffe68d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386079/normal_600e40e36e1b3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370547/normal_5ff80a7c719ef.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/fakuguvil/sheetz_headquarters_claysburg_pa.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/roman_catholic_tamil_bible_free.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_off0000b16c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB16C 5132 bytes
SHA-256: d81cad6302fe7d509e568b0c24b57f129ca4a78495a5c366a3eb7ba1c2a88c2a
font_01_sfnt_off0000c2d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2D0 10284 bytes
SHA-256: e8bf5b84cf9879fc8aa25924146699d275d3e6d1d4a23e61f49402d0c8bdc0c8