Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6e936451322644f…

MALICIOUS

PDF

80.4 KB Created: 2021-03-02 21:13:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 9878ee190e088e56e9b07f19c01bc106 SHA-1: a5d6b96b0bfea60863ca4f44b10f3f5c7b8d70e8 SHA-256: d6e936451322644fedc5f8e88f60a42397579081ed3662c20c1f3cb95207eab9
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=uv-5r+baofeng+software PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4452389/normal_6005008a4a0b0.pdfIn PDF document text
    • https://cdn.sqhk.co/sunalikefazo/0zjyUja/nbc_sports_network_premier_league_schedule.pdfIn PDF document text
    • https://cdn.sqhk.co/zelosoza/iajdd9t/61478517978.pdfIn PDF document text
    • https://cdn.sqhk.co/mevazasid/heMWihu/46303977749.pdfIn PDF document text
    • http://theporte.xyz/garokijomc580m.pdfIn PDF document text
    • http://getsalle.xyz/aircare_humidifier_fault_codes5ptii.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wusone/93679247759.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/dk_eyewitness_travel_guide_new_york.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/84689025257.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/xuvidofagudasujoxutiwedep.pdfIn PDF document text
    • https://s3.amazonaws.com/lomogas/adolescence_medley_sub_indo_batch.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/discussion_section_of_a_lab_report_example.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/sagolixosixobojuguwasizud.pdfIn PDF document text
    • https://s3.amazonaws.com/lezopobigeza/how_change_transmission_fluid_and_filter.pdfIn PDF document text
    • https://s3.amazonaws.com/sugowubuf/calendario_febbraio_2018_da_stampare.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_off0000f46a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF46A 5344 bytes
SHA-256: 341b940a313deeb380cc8d220ac3b6c68fec56287d5157c8a2d370b494627bc0
font_01_sfnt_off000106d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106D2 14828 bytes
SHA-256: 17d71c2ef9e27462932f5ec128fc9769a2f5d468d3f6438db437a1675cbabf09