Malicious PDF — malware analysis report

Static analysis result for SHA-256 8937d8f401e9ce15…

MALICIOUS

PDF

49.1 KB Created: 2020-11-09 04:36:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: e83a03cfaad35018bef7b5101d62cdd7 SHA-1: c4b42f9c711fa417b4621385e7936be2131ca515 SHA-256: 8937d8f401e9ce15c78695c503083cdb2c519d149e7a9b0fbb4654abb850d93c
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://trafffe.ru/aws?keyword=sin+city+deciples+president PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4382003/normal_5fa7f2a9c100a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372723/normal_5f91647f6e633.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://sapifotad.files.wordpress.com/2020/11/56828111336.pdfIn PDF document text
    • https://xojomome.files.wordpress.com/2020/11/zefitufoxagaxajejex.pdfIn PDF document text
    • https://munakuwujeju.files.wordpress.com/2020/11/solving_multi_step_equations_puzzle.pdfIn PDF document text
    • https://gawidomer.files.wordpress.com/2020/11/jixafunozolobavesuwilik.pdfIn PDF document text
    • https://lavukiju.files.wordpress.com/2020/11/15987205006.pdfIn PDF document text
    • https://s3.amazonaws.com/jezobasit/dac_sportsafe_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/56128538122.pdfIn PDF document text
    • https://s3.amazonaws.com/jukezeluf/tigo_como_recuperar_chip.pdfIn PDF document text
    • https://gibupobale.files.wordpress.com/2020/11/dell_u3818dw_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/303cbd45-bb0e-44f2-8426-8fe341b1d767/42602196091.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/tool_nose_radius_compensation_chart.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/51468966058.pdfIn PDF document text
    • https://xeragefaruj.files.wordpress.com/2020/11/5017474185.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01d2af59-5cfb-4df8-8f1c-e1efafb87cb7/natural_remedies_for_ovarian_cysts_that_actually_work.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_off00008280.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8280 5060 bytes
SHA-256: dd17d42ccfa83336cbc724c46889070aabcf3373aa9cf6be7e982d34f5a8887b
font_01_sfnt_off000093d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93D1 10444 bytes
SHA-256: 71fef66685c6262ab250f7f113ab3aba022f1bb43021c585a05beba393691aaa