Malicious PDF — malware analysis report

Static analysis result for SHA-256 485942e6044c12da…

MALICIOUS

PDF

68.4 KB Created: 2021-02-13 13:21:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7a925246f524a85bfdb21789b824191a SHA-1: e4334058c751c7a4ac5e9910841b408d47f248a8 SHA-256: 485942e6044c12da89d108736c879b640090dac9fca2a17bed8d23a5ee3d7ee6
194 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=evil%20dead%20full%20movie%20%20mp4 In PDF document text
    • http://idealslimitaly-ufficiale.site/virtual_house_painter_exterior_freek3828.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/CLifWpz/hakuouki_characters_relationships.pdfIn PDF document text
    • http://xbet1.fun/best_reader_for_ipadgnnfq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406454/normal_601902545a941.pdfIn PDF document text
    • http://verification-help.business/block_all_outgoing_calls_android4wy8c.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/2ja5rDl/46561614772.pdfIn PDF document text
    • http://sadovik.me/gozegeraxomobagezaboxaduv4yrq4.pdfIn PDF document text
    • http://idealicacolumbia.site/kiwadifekopomipupalovejr24st.pdfIn PDF document text
    • http://ilmahli.com/meijer_blood_pressure_monitor_74-5021_manualht8st.pdfIn PDF document text
    • https://cdn.sqhk.co/mimotulifoti/wAghDNZ/61574762840.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/fedure/vebixezoluzoramuluxula.pdfIn PDF document text
    • https://s3.amazonaws.com/bisazabe/42723419370.pdfIn PDF document text
    • https://s3.amazonaws.com/xowasosuf/live_sports_tv_hd_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/arduino_mega_adk_r3_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/nuruvapozixix/top_wallpapers_free_mobile.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_off0000ccc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC8 5020 bytes
SHA-256: a44845248787ed09ccfa5b72c9f0c3aac91d9e121342198921cd34a8e26d1f77
font_01_sfnt_off0000dde0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE0 10896 bytes
SHA-256: e33f7f3fc4dbc109575b0f69e02ecaa4d0281d31003b1da10b9ce493f8eccbf0