Malicious PDF — malware analysis report

Static analysis result for SHA-256 04d6a9dde014a81f…

MALICIOUS

PDF

77.6 KB Created: 2021-03-28 01:33:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: a07b891b922c332c226cb62dba108840 SHA-1: e84bded2efad4f6a6155fddb07372a335b325cf8 SHA-256: 04d6a9dde014a81f5857fdcea8d12ffd1bf46fe007c2a51dc5a3022362575e8c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, with at least one, https://xezojetit.ru/award?keyword=smoke+testing+with+example+pdf, being directly linked to the sample's content. The PDF structure and embedded links suggest it's designed to redirect users to potentially harmful websites, likely for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xezojetit.ru/award?keyword=smoke+testing+with+example+pdf PDF link annotation
    • http://lazujifoxupa.getenjoyment.net/76425555196.pdfIn PDF document text
    • https://cdn.sqhk.co/virurewev/hgjjcWV/liwuwu.pdfIn PDF document text
    • http://zanovekolasin.mywebcommunity.org/honda_ridgeline_transmission_fluid_change_interval.pdfIn PDF document text
    • http://gutibefatidag.medianewsonline.com/xejugew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379969/normal_5fc66449d6f06.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • https://cdn.sqhk.co/vugasoveg/MjfYQB5/46618960671.pdfIn PDF document text
    • https://cdn.sqhk.co/wodelaganav/jdghM63/vawebilomelipexivenuf.pdfIn PDF document text
    • https://cdn.sqhk.co/roretuduva/jbusHMA/faxidad.pdfIn PDF document text
    • http://juvizex.sportsontheweb.net/anne_ancelin_schtzenberger_ae_mes_aeux.pdfIn PDF document text
    • http://bomisedoxu.mywebcommunity.org/characterization_of_nanoparticles.pdfIn PDF document text
    • http://vowujebotoza.mywebcommunity.org/air_pollution_project_work.pdfIn PDF document text
    • http://serawuv.mygamesonline.org/vetog.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491688/normal_5fc6d06ae2f98.pdfIn PDF document text
    • http://portkamesto.site/maestria_en_terapia_cognitivo_conductual_online3afp4.pdfIn PDF document text
    • https://cdn.sqhk.co/dukoredod/ciafjdK/todogogosuwulijefeda.pdfIn PDF document text
    • http://goldalbum.ru/logawupigalewopufulxdy1o.pdfIn PDF document text
    • http://gramnews.xyz/fordham_gsas_academic_calendar75cia.pdfIn PDF document text
    • http://nomudepalak.medianewsonline.com/matematicas_financieras_alfredo_diaz_mata_gratis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://90ff81fc-98d9-4e53-96a3-aaa5c1c2042e.filesusr.com/ugd/bb5aff_9fe61d080656417e80285ca7ce9c393d.pdf?index=trueIn PDF document text
    • http://zedofaxuboz.onlinewebshop.net/90838938800.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/download_materi_brevet_pajak_a_dan_b.pdfIn PDF document text
    • https://a86a6b26-b473-4b55-b9aa-7628a2bff077.filesusr.com/ugd/4f270c_1f8d5e7a832a4419b55832b9af9b279c.pdf?index=trueIn PDF document text
    • https://c84ffda1-e72a-45fa-8ce8-a771970cf326.filesusr.com/ugd/9fd656_17403e41c96c48529ef06c162ddc52ff.pdf?index=trueIn PDF document text
    • https://9de673a2-3b8e-40eb-bbf5-c0ad8e71a3da.filesusr.com/ugd/bd5c68_32400ea29ee84dfeb4ae12ba1e705240.pdf?index=trueIn 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_off0000ee05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE05 5688 bytes
SHA-256: 015cbcb0f05eb52186fac3279913a55a54de5b7341c21810f63275692a49a978
font_01_sfnt_off0001015b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1015B 11764 bytes
SHA-256: b176e763c90f3730a9df9ed36d0adbab0fb0ac1953778c119952b0f6228b1cb9