Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b396499ca161631…

MALICIOUS

PDF

81.2 KB Created: 2021-02-27 14:02:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b5eaccf0d841fe0836983867a5f4746c SHA-1: dc102dbb5054eb7a98717f57cc0129e325c8eba5 SHA-256: 4b396499ca161631abf5e7d4f50c47c609b1156607c96f1239a57cd525b031d9
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://ponafet.ru/wix?keyword=%25D1%2582%25D1%258B+%25D0%25B8%25D1%2581%25D0%25BA%25D1%2583%25D0%25BF%25D0%25B8%25D0%25BB+%25D0%25BC%25D0%25B8%25D1%2580+%25D0%25BE%25D1%2582+%25D0%25B3%25D1%2580%25D0%25B5%25D1%2585%25D0%25B0+%25D1%2582%25D0%25B5%25D0%25BA%25D1%2581%25D1%2582+%25D0%25BF%25D0%25B5%25D1%2581%25D0%25BD%25D0%25B8 PDF link annotation
    • http://wellwork.site/dimodibivib6b1qn.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411918/normal_5fe51e98d02cf.pdfIn PDF document text
    • http://saudiautoinsurance.com/cute_cat_wallpaper_aestheticahzti.pdfIn PDF document text
    • http://lajodibibodi.getenjoyment.net/jugekumogaxoko.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421209/normal_6033951395f41.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4473902/normal_5fe319d837496.pdfIn PDF document text
    • http://kazimibi.getenjoyment.net/pujewagonenogofogoweru.pdfIn PDF document text
    • https://ponafet.ru/wix?keyword=%25D1%2582%25D1%258B+%25D0%25B8%25D1%2581%25D0%25BA%25D1%2583%25D0%25BF%25D0%25B8%25D0%25BB+%25D0%25BC%25D0%25B8%25D1%2580+%25D0%25BE%25D1%2582+%25D0%25B3%25D1%2580%25D0%25B5%25D1%2585%25D0%25B0+%25D1%2582%25D0%25B5%25D0%25BA%25D1%2581%25D1%2582+%25D0%25BF%25D0%25B5%25PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/bytefence_anti-_malware_free_trial.pdfIn PDF document text
    • http://gosaduzunake.myartsonline.com/45892149990.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/85944051684.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/communication_attitude_test.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/excel_vlookup_on_different_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/register_form_template_html_css.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/vinujiwajekaka.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/bellmore_weather_report.pdfIn PDF document text
    • https://s3.amazonaws.com/gifojuxaxeva/lisujupifom.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/dovofudatububuwogofututew.pdfIn PDF document text
    • https://s3.amazonaws.com/sitozi/pardesi_anthem_video_song_1080p.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_off0000f179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF179 5616 bytes
SHA-256: c7e1a3fef9a6dc7c23557cd7d386569a2f563155aa33883a9fceace852d2b9d0
font_01_sfnt_off00010425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10425 16056 bytes
SHA-256: 1634c5b7d7d364fc85974cf9c195f842d4c563907a918dd2aa9a2d642a8293f4

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