Malicious PDF — malware analysis report

Static analysis result for SHA-256 9493bb32f41e760b…

MALICIOUS

PDF

76.2 KB Created: 2021-01-18 19:00:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 937976cb41b4bec6c351f54ce40c3a03 SHA-1: 9568587e52e7c51115c32706c4a233bd4677cae7 SHA-256: 9493bb32f41e760b93ee9a7556a246439fe6ac1cc6af5be65a68e8f84dad0999
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://bologen.ru/wb?keyword=world%20best%20mobile%20games%20ranking PDF link annotation
    • https://fagadixiridare.weebly.com/uploads/1/3/5/3/135304990/3153341.pdfIn PDF document text
    • https://buzijivugaza.weebly.com/uploads/1/3/4/7/134709386/c2839.pdfIn PDF document text
    • https://site-1175108.mozfiles.com/files/1175108/minority_report_movie_480p_free.pdfIn PDF document text
    • https://fofafobef.weebly.com/uploads/1/3/4/3/134349457/xamemoz.pdfIn PDF document text
    • https://rujovisaz.weebly.com/uploads/1/3/4/3/134328318/4376984.pdfIn PDF document text
    • https://tobosuxonekid.weebly.com/uploads/1/3/4/4/134493818/befavetug_bavulinot_jasatenul.pdfIn PDF document text
    • https://nanufuso.weebly.com/uploads/1/3/4/4/134443711/dufugekogubupebok.pdfIn PDF document text
    • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/afd91.pdfIn PDF document text
    • https://site-1178101.mozfiles.com/files/1178101/jump_over_meaning.pdfIn PDF document text
    • https://nexuragero.weebly.com/uploads/1/3/4/7/134751893/woxitixa.pdfIn PDF document text
    • https://tukuboxux.weebly.com/uploads/1/3/4/5/134510407/bf83a715364.pdfIn PDF document text
    • https://site-1172155.mozfiles.com/files/1172155/snake_and_block_game.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382778/normal_5fe8bf543dc79.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/fopalew/network_controller_driver_windows_7_free.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/88673068016.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_off0000edc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC3 5360 bytes
SHA-256: 837f4af48dcd070ab7cf87f80ec690e5b477dcb455b22cd1358bd95b32832f20
font_01_sfnt_off0000ffed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFED 10672 bytes
SHA-256: 784f6cd20c05fd0726cf8a64e969006e6bfd80dfbc3da53524e0d5a5dd6a1acd