Malicious PDF — malware analysis report

Static analysis result for SHA-256 58c853a9270646da…

MALICIOUS

PDF

71.8 KB Created: 2021-02-11 16:14:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 566987151ba73eb6daa608285e9d3796 SHA-1: 5d8f15798bc4bb40b4e0d0a5812047217a67391f SHA-256: 58c853a9270646da087f828575deda31eeb05f7b972bb3633e8bdb0eccc2ae65
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/123?utm_term=clean+air+act+pdf PDF link annotation
    • http://bepebeku.22web.org/vaxanez.pdfIn PDF document text
    • https://cdn.sqhk.co/pobumepova/h7hKz4r/pakodotalarik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474988/normal_601ceea00c9b7.pdfIn PDF document text
    • http://puguwepofem.22web.org/ldpe_sabic_datasheet.pdfIn PDF document text
    • https://cdn.sqhk.co/semegopo/he1heZQ/wikaxofubegerugo.pdfIn PDF document text
    • https://cdn.sqhk.co/zivuronufepu/RrCghha/euro_truck_driver_2_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/f2ezJNH/pipatomamavipotojikiba.pdfIn PDF document text
    • https://wotutokope.weebly.com/uploads/1/3/5/3/135315373/linidijox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373281/normal_601cc106d48b2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403143/normal_5fd34cd1b23a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bonizigajivoxi.epizy.com/54030756560.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/hrzn_earnings_report.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/christmas_vacation_quotes_eddie_rubber_sheets.pdfIn PDF document text
    • http://valapapiwusujeg.rf.gd/advanced_trauma_life_support_atls_course_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/android_auto_3._0_carstream.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_off0000dd02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD02 4876 bytes
SHA-256: 95d9da25923d973489b2ffe27c20f454b976f969d47b636d48e6b2a30dc7e270
font_01_sfnt_off0000eda5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA5 10880 bytes
SHA-256: d15a83f42f251464fad34d65e73332df672492fc09365613980cf93cdfdbd968