Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf0525e0987d047a…

MALICIOUS

PDF

68.4 KB Created: 2021-02-14 07:17:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ab6344cfb6c581761e945b76a011aa3f SHA-1: 050d2f3e547a51a712b32328e718e72e8fb2043f SHA-256: bf0525e0987d047ad19dfb244db1c6722033af168082c6f58752fefbf6e88e9b
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/aws?utm_term=lady+antebellum+album++zip PDF link annotation
    • https://cdn.sqhk.co/posojuvapono/gjwighf/nudamadasazujaxurobob.pdfIn PDF document text
    • https://gilaxaled.weebly.com/uploads/1/3/1/4/131438091/21616.pdfIn PDF document text
    • https://cdn.sqhk.co/tasokuxu/i9idgiW/83801689084.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/EghigWj/color_block_dress_black_and_white.pdfIn PDF document text
    • https://cdn.sqhk.co/vanewano/igaOhgS/95096932029.pdfIn PDF document text
    • http://lovemecompletely.com/maru_varthai_song_mp3_downloadznmtp.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389090/normal_5ff3825877197.pdfIn PDF document text
    • http://meetporte.xyz/70361255660dx0ea.pdfIn PDF document text
    • https://cdn.sqhk.co/gomiwopizi/8NFnjJD/kakedarugakokatodunuge.pdfIn PDF document text
    • https://cdn.sqhk.co/pusuvizodez/ie6hjgg/steam_enthalpy_calculator_free_download.pdfIn PDF document text
    • http://aarbuz.space/warframe_kubrow_namesfxjo0.pdfIn PDF document text
    • http://requiredjokblog.com/anatomy_and_physiology_tortora_bookv0315.pdfIn PDF document text
    • https://cdn.sqhk.co/woteruzid/gigjgjK/summoners_war_3_star_tier_list_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/supopareso/j9Lccjd/19102437902.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/jivuxo/nogabaweliwemaz.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_off0000cf2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF2D 5064 bytes
SHA-256: 0cec10396434ae73a6a29b1c8996b5607b5e2a81a28281610b88d78230f28e75
font_01_sfnt_off0000e067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE067 10604 bytes
SHA-256: 637f8b93a9b5754fa97e579493b12d2ad573edf92a895af20bdf1c2e17e871a3