Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b8e6b240db71846…

MALICIOUS

PDF

66.8 KB Created: 2021-02-08 07:50:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b49c8ff368297a10f45ae12ddc42e0b6 SHA-1: 4c817ab84205ee9425e8883b5d64ac6e3d67413a SHA-256: 4b8e6b240db718463e536790767d7f10376a4d0fb60938e58b94dce66fe8e040
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://bologen.ru/wb?keyword=bitzer%20bse%20170%20data%20sheet PDF link annotation
    • http://pumba-timon.space/screen_recorder_app_for_laptop_downloadglzke.pdfIn PDF document text
    • https://jinumajot.weebly.com/uploads/1/3/1/4/131409926/74c627fc9efc3.pdfIn PDF document text
    • http://afterdealer.pro/dreamcast_bios_files_for_reicast_android5e3nx.pdfIn PDF document text
    • https://gakujoxabusu.weebly.com/uploads/1/3/5/3/135394689/479388.pdfIn PDF document text
    • https://lerozezowigex.weebly.com/uploads/1/3/0/7/130776164/9741343495fb4.pdfIn PDF document text
    • http://serviceforyou.site/overall_heat_transfer_coefficient_calculator9dczm.pdfIn PDF document text
    • http://doucheapp.xyz/4_piece_heart_puzzle_template31b27.pdfIn PDF document text
    • https://cdn.sqhk.co/mepowokugo/dhjjZhh/free_dating_apps.pdfIn PDF document text
    • https://cdn.sqhk.co/bepifopid/Gjbhe1Z/business_manager_jobs_in_schools_west_midlands.pdfIn PDF document text
    • https://cdn.sqhk.co/wepenujofow/5hdTYji/dunk_hit_high_score_screenshot.pdfIn PDF document text
    • http://fruitnaturs.space/37716987627iyyc0.pdfIn PDF document text
    • https://cdn.sqhk.co/fenozidu/cNugije/love_hacks_for_couples.pdfIn PDF document text
    • https://mugokirupela.weebly.com/uploads/1/3/2/6/132681863/zojotap-litibitonuzarel-xebogumogobenop.pdfIn PDF document text
    • http://help-bluebadgecustomer.com/all_pattern_programs_in_javax36nu.pdfIn PDF document text
    • https://wekexodaxax.weebly.com/uploads/1/3/4/7/134713384/jazirilagu-vujaxag-womilixiti.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/lusabifef/mezirepile.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/angry_photos_of_lord_shiva.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/medical_english_test.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_off0000c703.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC703 5396 bytes
SHA-256: 9ea9d37b1ddf1fd7951a547305ea44e6c4540beb2beae77377fafa5447b9ea67
font_01_sfnt_off0000d966.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD966 10856 bytes
SHA-256: 280924b741e37c93aa63582e623c0383894982ca6b0c7f5b53b91655c1cf59a8