Malicious PDF — malware analysis report

Static analysis result for SHA-256 121816f0e3cd5610…

MALICIOUS

PDF

62.8 KB Created: 2020-11-07 16:53:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 295286827f0466dd4e11fc4218813735 SHA-1: 299cf99392cbe162774dd75aa53b22c68aaeaa57 SHA-256: 121816f0e3cd561010c68affbf374d04de1de57d858af0a3109be16076f855c2
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffset.ru/123?keyword=warrior+cats+darkest+night+free+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368975/normal_5f9412c0c05f2.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/rubidokezive/gangster_vegas_cheats_app.pdfIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/gazemepirudaxepukobabevub.pdfIn PDF document text
    • https://s3.amazonaws.com/vexeliku/types_of_anemia_in_pregnancy.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/sisatojo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e3bd69d-af7f-4952-98c8-cfd9fb7f61e4/12660792166.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/captain_buggy_one_piece.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/frazier_park_school_calendar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/771d1431-bbd9-48e7-bb13-042f90ceaee0/it_id_worksheet_kindergarten.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/vein_miner_mod_fabric.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/begedelafiwimina.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/como_convertir_de_a_word_en_macbook.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/thinknoodles_youtube_wiki.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_off0000b2c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2C9 5464 bytes
SHA-256: 664922978fde90ee83674b9a8b4501f58f4f18e29de44f8447dfd5943e48fee9
font_01_sfnt_off0000c56e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC56E 11988 bytes
SHA-256: 004529373a76e588eab8326a8b318ade2524320515bdb8a6f10d341f096c70b0