Malicious PDF — malware analysis report

Static analysis result for SHA-256 c953d1663246dc99…

MALICIOUS

PDF

73.0 KB Created: 2021-02-17 22:00:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 79ce55b0072a9af0aad52fef662a4330 SHA-1: 0ee944a34d6da3cf0418a6feacadb78e033cf78c SHA-256: c953d1663246dc9919191a446060f222baae8de24e9cc98becce886faddc8e2a
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://druttle.ru/wix?keyword=applications+of+no+limit+hold+em+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4457620/normal_5fed4f31584f3.pdfIn PDF document text
    • https://cdn.sqhk.co/kitolitik/ciehftw/2048x1152_attack_on_titan_season_3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461205/normal_600a16b7c3cd4.pdfIn PDF document text
    • http://begemot.space/what_channel_is_newsmax_on_dishbtqv8.pdfIn PDF document text
    • http://ens-pictures.ru/34284037273guxmq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410194/normal_600d2fc7c56c0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415530/normal_5fce4e4614049.pdfIn PDF document text
    • https://cdn.sqhk.co/dabigewom/hhQmgjd/cross_stitch_patterns_free_to_download_christmas.pdfIn PDF document text
    • http://evakuator-uga.ru/28581836097spxuv.pdfIn PDF document text
    • https://cdn.sqhk.co/posebozej/Xhbighc/monument_valley_2_walkthrough_aphelion.pdfIn PDF document text
    • http://italia-doc.fun/physics_of_the_human_body_herman_solution_manual2665l.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/nitatotol/adharam_madhuram_vadanam_madhuram_ringtone.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/jordan_canonical_form_4x4_matrix.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/82318500752.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3D3 5076 bytes
SHA-256: 2103b447805b122c7c73e3669bc45c4c49215192db52e3d147180935f8672329
font_01_sfnt_off0000e4e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E0 10644 bytes
SHA-256: 18e916ce6b4d2d7cc0a38810d489fb7d7285d4ec54fc9abd2b7d770eaa60bfd5
font_02_sfnt_off0001092e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1092E 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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