Malicious PDF — malware analysis report

Static analysis result for SHA-256 95f503039b67d4cb…

MALICIOUS

PDF

72.4 KB Created: 2021-03-02 13:08:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f63b47392350a1589d11fcd670917303 SHA-1: 47442d0e1535ec733c25e77cb72ef7437ca192a6 SHA-256: 95f503039b67d4cb9f67f5de79bfe0d6a0f6c7f21b78220fc87662cd773e4a82
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/award?keyword=how+to+connect+behringer+c1+to+computer PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4470821/normal_6006ab6b62f03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471959/normal_6032ff477ba8a.pdfIn PDF document text
    • https://mofalapew.weebly.com/uploads/1/3/4/3/134307760/paxovev_melopuva_dazunerudujot_kaxal.pdfIn PDF document text
    • https://fetepidema.weebly.com/uploads/1/3/4/6/134684810/4d325239d76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478655/normal_60116ee9e6de3.pdfIn PDF document text
    • https://xijofufakeziti.weebly.com/uploads/1/3/1/3/131380729/63c97653a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403120/normal_6018d7f51336d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367960/normal_600442f3203e4.pdfIn PDF document text
    • https://zanobuxukopul.weebly.com/uploads/1/3/4/6/134678616/7868036.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496015/normal_601836a93dfa4.pdfIn PDF document text
    • https://libadelalisam.weebly.com/uploads/1/3/4/5/134579317/388752dc237.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bifipigi.epizy.com/hard_words_to_say_in_spanish_for_english_speakers.pdfIn PDF document text
    • http://befakugidutoj.rf.gd/davy_jones_theme_song_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/how_to_change_ink_on_canon_p23-dh_v.pdfIn PDF document text
    • http://wekapalipewux.epizy.com/31327250810.pdfIn PDF document text
    • https://s3.amazonaws.com/telasebisu/nilisedezovodasaz.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_off0000df55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF55 5172 bytes
SHA-256: 28bc2b0db069c89aefcb2c4e299d3895c90461fa1ff81e3a4587d683cfbf7d80
font_01_sfnt_off0000f0dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DC 10468 bytes
SHA-256: d6ed70efb40e25cc741445f0301351f74784a2004d1b6607638953759cd1ec95