Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fbbe1a89fc648b6…

MALICIOUS

PDF

68.0 KB Created: 2021-02-14 04:31:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8df94b9125ba1f052c1b96b506eb0c3e SHA-1: a74accd1067cc15f7dda07b46a2ae891aa3a5646 SHA-256: 9fbbe1a89fc648b6e28bcef9231e9e95daf013be097d863e5ea2f40f2406cf6b
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/aws?utm_term=empty+garden+piano+sheet+music PDF link annotation
    • http://axecheat6.xyz/226417353729wavc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464327/normal_5fd197b8c68b8.pdfIn PDF document text
    • https://cdn.sqhk.co/pekebugus/g6hagem/33302927196.pdfIn PDF document text
    • https://cdn.sqhk.co/lojeliju/9icghF7/pulling_usa_2_apk_android_oyun_club.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464878/normal_60132af3f0e29.pdfIn PDF document text
    • http://voztrans.ru/bureau_d_angle_informatique_ikeaf1l7h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479254/normal_5ff55bd7bbf16.pdfIn PDF document text
    • http://idealica-italiaufficiale.website/physics_of_heavenkmmb8.pdfIn PDF document text
    • https://cdn.sqhk.co/bevurokakug/jicKijf/relaxing_music_collection_download.pdfIn PDF document text
    • http://prizinsta.site/coniugazione_del_verbo_accettare_forma_attivaxp0dr.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470543/normal_5fdff5aa8497f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500001/normal_5ffe8e71a3f15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464724/normal_600e62e8643e5.pdfIn PDF document text
    • http://uscovidcharts.com/tekken_7_eliza_codeaigde.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/loxopudizus/huso_acromatico_formacion.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_off0000ccba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCBA 5516 bytes
SHA-256: aaddab04242c78bb3f32eb9e926b8e6a39d8b7e6c1e7582f1dc0d9b6527b71da
font_01_sfnt_off0000df5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF5A 10484 bytes
SHA-256: ef9a1e70fefc0f4d6239da320a24a053fdfe31914cfef2c4972b9e8f90fdfee1