Malicious PDF — malware analysis report

Static analysis result for SHA-256 8311a620a9d3accd…

MALICIOUS

PDF

75.4 KB Created: 2021-02-12 17:43:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: efd8cc117f8b04c7b56161276e5f19bc SHA-1: 9c00377fc198786e44d30b4bf7930c7aba494588 SHA-256: 8311a620a9d3accd9d58d58f5bfc1fddf4cf2ccce269e041db0f0e5797f572ff
136 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
  • 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.
  • 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://baarspo.ru/wb?keyword=dengue%20practice%20guidelines%20philippines PDF link annotation
    • http://hookup666.site/tableau_tutorial_point_free_downloadteng3.pdfIn PDF document text
    • http://xrootunited.com/beauty_plus_app_for_androidibvn1.pdfIn PDF document text
    • http://copyrightviolationcenters.com/work_instruction_template_docjyw1p.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426830/normal_5fcae24f51283.pdfIn PDF document text
    • http://feyakast.online/bavakeb9rb3b.pdfIn PDF document text
    • http://info-pages.ru/bilant9abe.pdfIn PDF document text
    • http://koreanluxe.com/634622480027zjey.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500668/normal_6017f95a9c797.pdfIn PDF document text
    • https://cdn.sqhk.co/rosafipex/hgcMkjb/shark_ion_robot_r85_troubleshooting.pdfIn PDF document text
    • http://reduslim-official.website/constant_deviation_spectrometer_experimentpegqj.pdfIn PDF document text
    • http://quickpapp.online/bates_motel_imdb_episode_guidebsxcj.pdfIn PDF document text
    • https://cdn.sqhk.co/papebikuwi/chhh4Pe/xawigukamobinazopu.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/jivagajamav/consumer_reports_on_samsung_refrigerators.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/bonus_ball_template_sheet_printable.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/dosobokejedib.pdfIn PDF document text
    • http://sevuvev.epizy.com/25474681927.pdfIn PDF document text
    • http://losalevova.epizy.com/free_retail_inventory_excel_template.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/free_bluestacks_offline_installer.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_off0000e843.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE843 5332 bytes
SHA-256: 28c1138e8e0a4ac7d7d54b915b6a4765cf89bd3f29b1fa00413b0225b833d776
font_01_sfnt_off0000fa5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA5F 11164 bytes
SHA-256: 30903952d77c8fc71722deb5229d063ad2a1cf2b4e2268237ceb242853a4b887