Malicious PDF — malware analysis report

Static analysis result for SHA-256 033342ce207d7bdf…

MALICIOUS

PDF

48.3 KB Created: 2020-11-08 15:27:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: f39e6e39acfe400031b12f7ec36fd368 SHA-1: 76235509e6337af12b077b9ea07d1277d86d8629 SHA-256: 033342ce207d7bdf525ede7ea770ee9f88200159d6e6b3441c6ed7b76a21954b
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://trafffi.ru/123?keyword=college+confidential+northwestern+ed+2023 PDF link annotation
    • https://dazowuxope.weebly.com/uploads/1/3/4/3/134319454/4964218.pdfIn PDF document text
    • https://dirojobadenanew.weebly.com/uploads/1/3/4/1/134109317/nafalurilimigep.pdfIn PDF document text
    • https://fupuvoriru.weebly.com/uploads/1/3/4/4/134494751/nazigozubuvak-vunasej-kodaginegu-vibojifozonug.pdfIn PDF document text
    • https://mamexobupelo.weebly.com/uploads/1/3/1/3/131383482/2307760.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/zokokamu/jewuwolebezewixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a075503-5969-4972-aa24-8fd0c6cc4eef/.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/831593193.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/medial_collateral_ligament_sprain.pdfIn PDF document text
    • https://dukekewakoj.files.wordpress.com/2020/11/62988545535.pdfIn PDF document text
    • https://kusovoson.files.wordpress.com/2020/11/textbook_general_surgery_das.pdfIn PDF document text
    • https://pupirod.files.wordpress.com/2020/11/nozemapopumetuve.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000098a4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x98A4 17992 bytes
SHA-256: 6d2fbafa23d84ec3a28b949a217fc7a002ae5d369ff04d103609262c6f9cdff6
font_00_sfnt_off00006003.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6003 5720 bytes
SHA-256: 8c27140330c5da19b7051e1826f5d0630b570b82bee30fe8f0b194fc0024e10c
font_01_sfnt_off0000738a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x738A 10776 bytes
SHA-256: bde9a9866361dc003128a9748d5f5ba03290fdd2a3974f57977d9120bb1a3a60