Malicious PDF — malware analysis report

Static analysis result for SHA-256 f55b9138fa261151…

MALICIOUS

PDF

67.8 KB Created: 2021-02-25 06:29:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: fc6a8ff3c194251a2cd02f67a953905b SHA-1: c2b9fc609b70808916333084022abd1b422562d6 SHA-256: f55b9138fa2611510d6d6bfabdd788c8fa5dc045e2427cf43eeded9ee8b4890c
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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://druttle.ru/award?keyword=honda+9.9+outboard+parts+diagram PDF link annotation
    • https://wagimudo.weebly.com/uploads/1/3/4/4/134475497/b4600a02436d.pdfIn PDF document text
    • https://cdn.sqhk.co/pagifizipafo/bhad2P4/36470780758.pdfIn PDF document text
    • https://ripufimavewin.weebly.com/uploads/1/3/6/0/136099474/xesatokuduwe.pdfIn PDF document text
    • http://instapriz24.online/barbie_doll_poem_annotatedc9dlp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452618/normal_5fff7be0cba20.pdfIn PDF document text
    • http://deflecfcvy.best/duloseramonebaxusufife9zzfg.pdfIn PDF document text
    • http://canonsburglake.org/nuwulemoredabupawegezfg0.pdfIn PDF document text
    • http://nesobaka3.xyz/hitchhikers_guide_to_the_galaxy_book_page_count204ba.pdfIn PDF document text
    • https://xonufixusunex.weebly.com/uploads/1/3/4/6/134610533/95950c6063c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384149/normal_5ff29ce78a179.pdfIn PDF document text
    • https://tusatetop.weebly.com/uploads/1/3/1/4/131408029/zekuped_buboxijomovoje.pdfIn PDF document text
    • http://reduslim-siteofficial.site/english_words_list_with_picturesvtpg9.pdfIn PDF document text
    • https://kasuvimifimo.weebly.com/uploads/1/3/1/6/131637099/39a46528.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367296/normal_6009c2f5baced.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c9c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C0 5536 bytes
SHA-256: 153c4d9ece9d720425db2a146114c7a3c2186b20040b65ffc92430891294cd86
font_01_sfnt_off0000dc79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC79 10624 bytes
SHA-256: d5914d1a870654ec8403debfbaad53c84e285fc0bd625ee1c02f3e1ace63178d