Malicious PDF — malware analysis report

Static analysis result for SHA-256 577e09d0e318c3eb…

MALICIOUS

PDF

71.4 KB Created: 2021-03-08 00:02:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e9999eb5faef62d20603502cde2850bc SHA-1: 5cd4379970f2b9d3b5a5dac1bd834d5cd39e9748 SHA-256: 577e09d0e318c3eb21eb5eba1d52ee8f0cd0cef17d2ba8579407789770ef8d1a
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/wix?keyword=skype+apk+android+9 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4425919/normal_6017a033d82d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492918/normal_600f2da04b7bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465694/normal_5ff3a63e0d3ed.pdfIn PDF document text
    • http://wobixoka.66ghz.com/62451305321.pdfIn PDF document text
    • http://pozorigedaxepi.iblogger.org/felemilimalusama.pdfIn PDF document text
    • http://presentinsta.online/phosphorus_cycle_in_aquatic_ecosystemqi9ks.pdfIn PDF document text
    • http://julubavixukab.66ghz.com/jll_coworking_report.pdfIn PDF document text
    • http://discovljzg.fun/list_of_important_inventions_and_discoveriess45ol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389805/normal_5fe8ee5d29cb6.pdfIn PDF document text
    • http://hookup756.fun/xukatedijozosv0rv.pdfIn PDF document text
    • http://nefuzixitelu.iblogger.org/nunojemesamojitipiwepidub.pdfIn PDF document text
    • http://vykupavto54.ru/kawusajubekodejinemissw579.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454041/normal_602e2252a0908.pdfIn PDF document text
    • http://universe1.space/nofufatujend04.pdfIn PDF document text
    • http://bluhgang.best/pagefitebekavawaragek0caq9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vopimivukaf.epizy.com/english_speaking_mp3_free_download.pdfIn PDF document text
    • https://09ec9d85-9312-4337-94d0-b84080e05f2e.filesusr.com/ugd/ac0094_db5c3f0e8ba74d538681b6d16f54517f.pdf?index=trueIn PDF document text
    • http://beritoka.rf.gd/kepitose.pdfIn PDF document text
    • https://7ffe38df-ef78-47a1-8632-a9c579db478a.filesusr.com/ugd/8ff694_e3477fe8b67d460b8a41375e9c2ad427.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_off0000dc30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC30 5168 bytes
SHA-256: dcd1629d70c5ee16d28bf6d11c16cc312471943b7e9729eb45da0b94f38247c4
font_01_sfnt_off0000ede0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE0 10240 bytes
SHA-256: 6ac504e7d109f295e083a2ebcc643e575cdf4dc5c094d3d4d13cabb1a3265f2c