Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a63b4f8f731c0d5…

MALICIOUS

PDF

69.1 KB Created: 2021-02-03 03:03:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 38aff1181b70056eca90753aaf7ef912 SHA-1: 2c17342fd4c301c5a19b453a337cb8eaed93e2f2 SHA-256: 0a63b4f8f731c0d5bc3ef37c326e3e3b36fb843ae0fcd0bf1c5c62a9a40c20b8
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://baarspo.ru/wb?keyword=esteroides%20anabolicos%20androgenicos%20pdf PDF link annotation
    • http://shoop-fm.ru/cara_top_up_celcom_guna_maybank2u94ir9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465685/normal_60004e1937b8b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473049/normal_5ff0c483b5aa5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465685/normal_60180b88959d9.pdfIn PDF document text
    • https://cdn.sqhk.co/romumoxoleno/5U8jhij/descargar_latigo_de_sheldon_para_android.pdfIn PDF document text
    • http://vinnipoh.space/nasal_cavity_function_in_respiratory_systemxi9fx.pdfIn PDF document text
    • http://medgaj.com/adobe_photoshop_cc_camera_raw_presetsa7u3q.pdfIn PDF document text
    • http://walkover.me/free_printable_heart_coloring_pages_for_adultsbjupg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462379/normal_5fcd313642d42.pdfIn PDF document text
    • http://mazanatur.space/jenimuj96by.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474231/normal_5fcb2e009d1d0.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/b9gdias/cobra_fi2000_powrpro_black_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390374/normal_5ff7cc4c6b811.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456699/normal_5fc74a5a6df4b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458122/normal_5fe66ecc83a94.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE48 5420 bytes
SHA-256: 16adb66ae7031ae43f4402b926c694fe4ef53eadaea805e9f80063598ff5ad8c
font_01_sfnt_off0000e0bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BF 11448 bytes
SHA-256: 7f2c94a91590537b293a705f9cfe565e4cf53cd35857b39ab14b0fddb7c3e165