Malicious PDF — malware analysis report

Static analysis result for SHA-256 05a2df3b61f45dda…

MALICIOUS

PDF

77.0 KB Created: 2021-02-05 04:40:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 4422b5eae3037ebe3e6b548ee6f0303a SHA-1: 62bd83275803b549c57d8a18044a555b25ede2a1 SHA-256: 05a2df3b61f45ddaad664b9efb9117cd829de810b117af1883c3135c366673de
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains embedded URLs that redirect to potentially malicious websites, masquerading as a basketball world cup schedule. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the presence of external URIs suggests the document is designed to lead the user to a compromised site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/wb?keyword=basketball%20world%20cup%20schedule%20pdf PDF link annotation
    • http://kyponnik.online/asphalt_nitro_8_android_game_downloadss854.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393925/normal_5fd6339aba77a.pdfIn PDF document text
    • http://prizinsta24.space/neon_health_center_on_houghbql9o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426945/normal_6009fe97b4db0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465559/normal_5fd5f3fc7f45c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403408/normal_6004fccf6d8fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412379/normal_6002385c34fc4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446776/normal_5fe0ecc0d1c79.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491669/normal_5ffde70410f59.pdfIn PDF document text
    • http://hargotel.xyz/117082343111l6xj.pdfIn PDF document text
    • http://sejapamuji.22web.org/3201964141.pdfIn PDF document text
    • http://sellamorem.com/gateviradenonorbbsc.pdfIn PDF document text
    • http://olipaka.xyz/3d_animated_chess_games_freeljfkx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377935/normal_601aa7d2c7757.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462993/normal_5fcbfbfc82686.pdfIn PDF document text
    • http://pusolaxunu.66ghz.com/aliexpress_free_for_android.pdfIn PDF document text
    • http://musabonuluza.22web.org/soveje.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zorumiwopa.rf.gd/evaluating_algebraic_functions_worksheets.pdfIn PDF document text
    • http://wirirarosutuki.epizy.com/napoli_calcio_ultimissime_formazione.pdfIn PDF document text
    • http://nuwumexuxesi.epizy.com/business_writing_skills_books.pdfIn PDF document text
    • http://bufixel.rf.gd/annals_of_fuzzy_mathematics_and_informatics.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_off0000ee95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE95 5588 bytes
SHA-256: 76772bdce3d9b58a44b9da6958823e8a0f2baaa540dc1d821ba4064a05120424
font_01_sfnt_off000101a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A4 10864 bytes
SHA-256: edbcfe19ba35d743fa9f41ff7bb16b7a9566bc690f24ec5f51675142ffa3b15b

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