Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d3710b591b88dc7…

MALICIOUS

PDF

73.5 KB Created: 2021-03-04 11:37:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c7aafebe86440139b766edbe38b443a9 SHA-1: 1ac9c9f47cb7e9b19837a11338b4b2aa007fcd57 SHA-256: 9d3710b591b88dc76ca362e4cf9d12c3259c42d27163a46911f0acb51974f73c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://xezojetit.ru/strik?utm_term=what+are+examples+of+learning+strengths PDF link annotation
    • https://gitapizi.weebly.com/uploads/1/3/2/6/132683136/kasusenasokem.pdfIn PDF document text
    • https://pejagefetem.weebly.com/uploads/1/3/0/8/130815482/visifizisul.pdfIn PDF document text
    • https://gimipozadifan.weebly.com/uploads/1/3/1/3/131380487/rigakimanafuj.pdfIn PDF document text
    • https://debuvubuni.weebly.com/uploads/1/3/4/8/134846467/1995848.pdfIn PDF document text
    • https://cdn.sqhk.co/bemaxopig/jggLifI/11697636655.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446931/normal_5fe87a8f2a375.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474759/normal_5fd03ff66a72a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387037/normal_601dca2f65446.pdfIn PDF document text
    • https://nuzunovi.weebly.com/uploads/1/3/5/3/135314570/36b30676.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484636/normal_603f35487d63f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379222/normal_6004032bda211.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459036/normal_5fc5f7bdcf2a0.pdfIn PDF document text
    • https://cdn.sqhk.co/wizevomorofe/canwidZ/interstellar_trailer_ita.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421205/normal_60377a4c3a4f4.pdfIn PDF document text
    • https://vaxudiku.weebly.com/uploads/1/3/4/7/134709892/dawenogelex.pdfIn PDF document text
    • https://xewixubigikuj.weebly.com/uploads/1/3/4/8/134892453/103de51f32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428054/normal_6023d27b622c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420434/normal_602722f2a992e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e4b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4B4 5396 bytes
SHA-256: 5e3f1f0f9245fa19bcb077e712772ce9abcd6f0b68ccaf03f74c50560b8693d1
font_01_sfnt_off0000f6f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F9 9988 bytes
SHA-256: 95d052ea831430e55252c2674fc2ac99bb970f2378c1cbe8fad0c542e6c94c97