Malicious PDF — malware analysis report

Static analysis result for SHA-256 c41ac324c5841d16…

MALICIOUS

PDF

43.0 KB Created: 2020-11-08 01:18:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-02
MD5: 07b84093bc1e764217a744fefe0489fb SHA-1: 034a1860ad77f68af5d4517ae27d6ae7858d7eef SHA-256: c41ac324c5841d1681cf6379e41db4dff68deea7d120377688fb2add48c22c85
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://traffset.ru/aws?keyword=club+penguin+treasure+book+codes+2019 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366947/normal_5f906b1c62191.pdfIn PDF document text
    • https://nulixedupalaz.weebly.com/uploads/1/3/0/7/130739510/jemedamuw_lakagon.pdfIn PDF document text
    • https://desaviguwogo.weebly.com/uploads/1/3/1/8/131871994/sabew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390996/normal_5f913164891ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393485/normal_5f9b3f2350621.pdfIn PDF document text
    • https://veraweno.weebly.com/uploads/1/3/0/7/130739577/favivulepur.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417670/normal_5fa471c1328cd.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000067da.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000067da.bin)
    • https://s3.amazonaws.com/zowejunef/2943127669.pdfIn PDF document text
    • https://kudajufe.files.wordpress.com/2020/11/gigitapelexov.pdfIn PDF document text
    • https://gexevoj.files.wordpress.com/2020/11/sumas_y_restas_llevando_2_primaria.pdfIn PDF document text
    • https://lojopuwu.files.wordpress.com/2020/11/nevesubopinew.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/walt_disney_animation_book.pdfIn PDF document text
    • https://s3.amazonaws.com/kelukakeb/gobupux.pdfIn PDF document text
    • https://divabudepev.files.wordpress.com/2020/11/gakezo.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/gosokefubiwu.pdfIn PDF document text
    • https://dudabogem.files.wordpress.com/2020/11/omnicell_xt_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/bodepova/osu_ddr_skin_mania.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 extracted file (font_00_sfnt_off000067da.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67DA 5832 bytes
SHA-256: 941f097730f133daa37ab5264c01759b24c5aa2a99f0834e45d680fb472e77c8
font_01_sfnt_off00007bba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BBA 10316 bytes
SHA-256: ffcf2b53d0965feba4a009517a2f48fcb68b8311dcedc2daa3ba4b3b306ed6d2