Malicious PDF — malware analysis report

Static analysis result for SHA-256 c49df71ed5981a50…

MALICIOUS

PDF

70.5 KB Created: 2021-03-14 11:03:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: baa5cfe97f804c7f3970068d246c6dca SHA-1: bea42a2ddff602e570fe95efe9de64c57bc8e0dd SHA-256: c49df71ed5981a5056704fc607aa99c29803dd830a66c1e750e055d935324616
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the presence of external URIs and the document's structure suggest it's designed to trick users into navigating to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/strik?utm_term=herman+miller+aeron+chair+size+b+for+sale PDF link annotation
    • https://cdn.sqhk.co/gufojakig/jhgigGc/fluvsies_a_fluff_to_luv_mod_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403543/normal_5ff9637281a46.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488101/normal_5fc8c22dbfb2d.pdfIn PDF document text
    • https://cdn.sqhk.co/telazaje/ieticii/alita_battle_angel_official_trailer_music.pdfIn PDF document text
    • http://shoop-fm.ru/6638501824kmp3c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421329/normal_5ff80c11c9f53.pdfIn PDF document text
    • https://cdn.sqhk.co/bisuligiga/gj1LUja/atomic_radius_oxygen_carbon.pdfIn PDF document text
    • https://cdn.sqhk.co/waxixojapu/hin3Hi1/hip-_hop_producer_pads.pdfIn PDF document text
    • http://cz-nitrof.website/62198848236i95d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487184/normal_600e66c4838df.pdfIn PDF document text
    • https://cdn.sqhk.co/vusutesilo/LHjbigj/coin_rush_all_games_for_free.pdfIn PDF document text
    • https://cdn.sqhk.co/fovuxugo/ijtibgi/solomon_s_keep_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/tisewesir/d80ZhbY/74116658578.pdfIn PDF document text
    • https://cdn.sqhk.co/wimiwupo/Yiegias/chevy_silverado_wallpaper_for_iphone.pdfIn PDF document text
    • http://dezlice.ru/mutodegunifiup0g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418778/normal_602256a86f291.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0995c56-3f93-4ce3-aa2a-dd849e91963c/how_to_use_aroma_7_cup_rice_cooker.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/211b2cbc-1be4-46b2-ba3c-655da34fac0c/coleman_saluspa_inflatable_hot_tub_canada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be6e90b8-1d58-4549-94cb-aa0d7d42ce3f/how_to_use_tub_clean_function_on_lg_washer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/682a610f-62b5-4eb7-be8c-598960006559/how_to_change_the_toner_on_a_brother_mfc.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_off0000d5e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5E0 5272 bytes
SHA-256: 94f24db40c853ffb72e427c2e650e89e0820ebf9aab864364cd6eb6ea9f5f1a6
font_01_sfnt_off0000e79e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE79E 10940 bytes
SHA-256: 14c866ad3b86d49cac8d3173764df6ccea4e06e96b3a97cd6523902f37916ef4

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