Malicious PDF — malware analysis report

Static analysis result for SHA-256 79ce06f203e9a08a…

MALICIOUS

PDF

73.9 KB Created: 2021-01-20 20:52:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 9071b5afd66cb56981095b81ad643e73 SHA-1: 21a6f1decbd85e0ff0c05d105386e9f3670091c9 SHA-256: 79ce06f203e9a08a9116da18529f953e4677a9f951bc68322b39de8b4f16dc2c
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://druttle.ru/wb?keyword=kodi%20build%20for%20xbox%20360 PDF link annotation
    • https://sodefabufu.weebly.com/uploads/1/3/4/4/134473286/wipalupopi.pdfIn PDF document text
    • https://vumimexuderuwaz.weebly.com/uploads/1/3/1/8/131871863/tawuje.pdfIn PDF document text
    • https://pepomujotopulog.weebly.com/uploads/1/3/4/8/134873529/wuvesedixefip_vevedol_nejixadujekopin_zopuze.pdfIn PDF document text
    • https://lawagupavuraxap.weebly.com/uploads/1/3/4/6/134616311/sawiw.pdfIn PDF document text
    • https://toripifisesu.weebly.com/uploads/1/3/4/3/134367164/d8bb9fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380384/normal_5fe916a751b8c.pdfIn PDF document text
    • https://sonenekuz.weebly.com/uploads/1/3/5/3/135302947/07b48f6308.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422390/normal_5fa93b8046185.pdfIn PDF document text
    • https://totijavefukaja.weebly.com/uploads/1/3/4/7/134705726/31f00469040.pdfIn PDF document text
    • https://pixumoxijabana.weebly.com/uploads/1/3/4/7/134748481/bamena.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370560/normal_5fe935631b6a7.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/patotale/suspension_letter_format_for_school_students.pdfIn PDF document text
    • http://mulozeraxepe.epizy.com/tunudelefokit.pdfIn PDF document text
    • https://s3.amazonaws.com/radubozufiwo/killer_commas_worksheet_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/a4_box_file_label_template_word.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_off0000e520.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE520 5148 bytes
SHA-256: 704f6c490bf1d7223b4236fcb23def03cf98275d72fabd8350ee85baffb83440
font_01_sfnt_off0000f6bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BB 10660 bytes
SHA-256: d6081dbeff593265efcbca0c76c2b5e2ddbd95a667025221147a213cab2fa9ed