Malicious PDF — malware analysis report

Static analysis result for SHA-256 f04f5d87bc66c938…

MALICIOUS

PDF

62.1 KB Created: 2021-02-11 09:00:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 7f30c897ad3825e14a24706e93a42b51 SHA-1: f195b23bb5b4fe6f50ad1ccebed47e9dae614874 SHA-256: f04f5d87bc66c938a5cb19d03a80cd2ae47bbe00a13435bd4f0a2d62f3868ef4
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=2%20player%20games%20for%20android%20via%20bluetooth In PDF document text
    • http://detonic-italy.website/lekezajagojixi905gk.pdfIn PDF document text
    • http://sunshop.pro/dicionario_administrao_de_medicamentos_na_enfermagem9pmbx.pdfIn PDF document text
    • http://ukranews.icu/like_father_like_son_movie_quotesca9b6.pdfIn PDF document text
    • http://proflist-kursk.ru/72626122345hua7b.pdfIn PDF document text
    • https://sesenadudukani.weebly.com/uploads/1/3/0/7/130739889/183769bc9b2cbd7.pdfIn PDF document text
    • http://mnclassis.org/rf_magic_controller_user_manualv4shg.pdfIn PDF document text
    • http://pumba.fun/dominio_y_rango_de_una_funcion_trigonometrica_ejercicios_resueltosykose.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447108/normal_5fdf91ec201ca.pdfIn PDF document text
    • https://cdn.sqhk.co/gufezitaxato/bjiqjbc/savigulanofujabemegipobo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479254/normal_5ffcb7c1bc028.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379859/normal_5ff463c706eaf.pdfIn PDF document text
    • http://digitalmedialit.com/22685788968mm82g.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403681/normal_5ff8d503aeb6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375200/normal_5fdc7c889a5d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4503525/normal_5fe6cdf97da59.pdfIn PDF document text
    • http://pc-remont.website/bokukojoremale69n71.pdfIn PDF document text
    • http://matroskin.space/802087515139ubsh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480155/normal_5feb0d1fdd066.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_off0000b519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB519 5792 bytes
SHA-256: 983f3b5560e1ffa2d23f721dcb6e089e41e0e83690d7d06f5b593609fb945318
font_01_sfnt_off0000c8b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8B2 10404 bytes
SHA-256: 3497d8e45246a2fcca1baf9212ac897a3e760d55274c468c871399c69d786afc

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