Malicious PDF — malware analysis report

Static analysis result for SHA-256 efcac3d77f1cffa1…

MALICIOUS

PDF

82.3 KB Created: 2021-02-28 21:16:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 410d448086670b48a31c7399cee56f69 SHA-1: ab10571c4f3dfc1d7f3c3ab08e18bd0a5489fc3e SHA-256: efcac3d77f1cffa1d6da22dc311a4d5fba3425e86585282b781019b6916e0624
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://jumiwimov.ru/wix?keyword=clases+de+real+estate+en+espa%25C3%25B1ol+en+california PDF link annotation
    • http://perfectiona.online/independent_clause_vs_dependent_clause_worksheetxnd9e.pdfIn PDF document text
    • https://cdn.sqhk.co/fajoliteve/gcpgjia/jatasafik.pdfIn PDF document text
    • http://pedaxofanor.mywebcommunity.org/95849159433.pdfIn PDF document text
    • http://trujillostacoshop.com/kpss_ders_videolar_indir_cretsiz_2019o7nve.pdfIn PDF document text
    • https://cdn.sqhk.co/milevatomog/RieVjin/zotasilowerekasuzadaw.pdfIn PDF document text
    • https://cdn.sqhk.co/mezigiduze/gdjc240/cara_klaim_voucher_game_di_my_telkomsel.pdfIn PDF document text
    • https://cdn.sqhk.co/molivovuki/ogfijgc/sokezepadesotokogufe.pdfIn PDF document text
    • https://cdn.sqhk.co/zebimapajod/fRBUuhc/gluten_free_vegan_cake_recipe_bbc.pdfIn PDF document text
    • https://cdn.sqhk.co/petawelesup/hit7ghp/2002711877.pdfIn PDF document text
    • http://verilakuxad.iblogger.org/the_shack_book.pdfIn PDF document text
    • http://newsportstechnology.ru/voronelutuvevoghh7c8.pdfIn PDF document text
    • http://matroskin.space/how_to_wear_iworld_bluetooth_earbuds_with_wirekjakt.pdfIn PDF document text
    • http://beamorem.com/is_marvel_series_overzq39u.pdfIn PDF document text
    • https://cdn.sqhk.co/famuxina/f7jujaf/36998539947.pdfIn PDF document text
    • https://cdn.sqhk.co/dovawowo/jpjjggt/59120035209.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDC 5268 bytes
SHA-256: b6561b19ac5907040d2aca13fac8431ef60d8ae8fac5b6acad892357d32db490
font_01_sfnt_off0000fd8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD8F 11816 bytes
SHA-256: 1b0601811fd69b902b3b0c0d1ef411a546bce7d4afde59e08dd4d40dd0f50391
font_02_sfnt_off00012428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12428 16144 bytes
SHA-256: 18f56b7fae04e07bc119a468ad323bdda099da77b0772854d1c47cc1f39b9f3b