Malicious PDF — malware analysis report

Static analysis result for SHA-256 f72d77ae7979e078…

MALICIOUS

PDF

75.1 KB Created: 2021-02-28 21:41:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 53f2a2237daab9a99372837a35d77009 SHA-1: 83c2c6fbd9e30d6c8c304f1b02254c8599e133bd SHA-256: f72d77ae7979e078fcd3de6089b8d982524fe4755da5be0aa3eb0b9b034b44bd
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://vilenefex.ru/wb?keyword=2008%20escape%203.0%20oil%20capacity PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4423188/normal_5fc8b28076d80.pdfIn PDF document text
    • http://beviluxenumiliv.mywebcommunity.org/what_weapons_can_windwalker_monks_use.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401517/normal_603650df71e43.pdfIn PDF document text
    • http://vanimerukaguto.scienceontheweb.net/a_dance_with_dragons_archive.pdfIn PDF document text
    • https://cdn.sqhk.co/roretuduva/Rz4hbjf/vegas_world_free_slots_on_facebook.pdfIn PDF document text
    • https://cdn.sqhk.co/gadujotev/Iji2nLf/22231278667.pdfIn PDF document text
    • http://winovigamaj.mygamesonline.org/wamidevajimilirurew.pdfIn PDF document text
    • http://vazawujuzu.sportsontheweb.net/brother_tn_420_drum_reset.pdfIn PDF document text
    • https://cdn.sqhk.co/midipijikami/iH5jhia/mirukupoxitu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491946/normal_6033d5d2bdce8.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/xasolos.pdfIn PDF document text
    • https://cdn.sqhk.co/ripowusaro/ghdYjbm/gunship_strike_unlimited_scraps_mod_apk_download.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/pegozegi/90073660634.pdfIn PDF document text
    • https://s3.amazonaws.com/suxugipipolazog/car_game_apk_20mb.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/86058487502.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_off0000e4da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4DA 5504 bytes
SHA-256: 063d61e296e0427251f177dde116ade2b24ef417d67758a6d9c5d309597f8cba
font_01_sfnt_off0000f7ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7AB 11316 bytes
SHA-256: ff0e577012e8b9d0dd8adfef885448d3ec79df8765a5dcb112694a566599636f