Malicious PDF — malware analysis report

Static analysis result for SHA-256 41c8f128970e7908…

MALICIOUS

PDF

65.1 KB Created: 2021-02-12 08:40:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 8c77fbda8dba079856d3885998bcbb49 SHA-1: 3a9771d7f005d97ae5d548dae01c5ae0464ccc8e SHA-256: 41c8f128970e79080a2547b9f620ebe76186a4818e539a09075dd75afea69e7e
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://maypoin.ru/wix?keyword=south+orange+softball+orlando+fl PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4373997/normal_5fef633ab645a.pdfIn PDF document text
    • http://kejamezegujoz.iblogger.org/pdf_file_free_for_pc.pdfIn PDF document text
    • http://gozatelaji.22web.org/free_loft_bed_plans.pdfIn PDF document text
    • http://galoomer.online/play_tube_e_video_tube_como_baixar3na5t.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471467/normal_6016188142f11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491965/normal_5fd8dedbeba3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446494/normal_600eadf1b5385.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407749/normal_6007e7e180576.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447646/normal_5fdcfb9bbe813.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465941/normal_5fd0b8c5a4fa4.pdfIn PDF document text
    • http://fullpisetc.ru/video_calling_websitesditrs.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/sabobenuwe/bangla_movie_niyoti_full.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/dragon_ball_z_budokai_3_ps4.pdfIn PDF document text
    • http://vimitafukufes.rf.gd/apologize_movie_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/vedexajawo/goldsmith_ff14_guide.pdfIn PDF document text
    • http://kinugokapa.rf.gd/ceo_delhi_form_6_online_registration.pdfIn PDF document text
    • http://govetijedofesol.rf.gd/durigoxigenog.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_off0000bef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBEF1 5412 bytes
SHA-256: 9273e5f9cc9c5c8ff4ecedd2539e0b0540899a017531e873cc881114fd7c7b90
font_01_sfnt_off0000d14e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD14E 11360 bytes
SHA-256: c003d8a515a5ef40461cac4f58912fda9acc37dba5bd830b7dba656ba6360f9f