Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9ef4f70e70a2a76…

MALICIOUS

PDF

71.9 KB Created: 2021-02-27 03:25:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: dba7a7579e5e3cba365737406cf95194 SHA-1: 98ae8826e1643b76df37a1014e977ef0696faedb SHA-256: d9ef4f70e70a2a762932c267e55f2126f545e796287047f93838238a862fef77
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://maypoin.ru/award?keyword=que+es+ser+un+buen+lider+empresarial PDF link annotation
    • http://latuha.com/unsettled_tom_meme_templateoohs2.pdfIn PDF document text
    • http://frontglass.xyz/nogidexovijeldnv9.pdfIn PDF document text
    • http://xemizawufogutuf.scienceontheweb.net/45669262310.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/ZXFGvYd/learn_html_freecodecamp.pdfIn PDF document text
    • http://ig-copyrightnotice.com/hotel_california_guitar_sheet_music_easy4h09v.pdfIn PDF document text
    • https://cdn.sqhk.co/tusadopovet/6I9hcFp/gel_nails_ideas_fall.pdfIn PDF document text
    • https://cdn.sqhk.co/xasexuwosul/hg1y0jc/habitable_exoplanet_news.pdfIn PDF document text
    • https://cdn.sqhk.co/ragebobeb/hdWtJfw/nomusevut.pdfIn PDF document text
    • https://cdn.sqhk.co/fulaxanew/lLubKii/89644039091.pdfIn PDF document text
    • https://cdn.sqhk.co/dusawugivepo/igjgcgh/74179505994.pdfIn PDF document text
    • https://cdn.sqhk.co/mowezeto/Jjhgfha/miwedutopol.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/hdEjblU/freeze_dance_animal.pdfIn PDF document text
    • https://cdn.sqhk.co/perikowep/1jcdtNm/kuxeviviwegavivikepasisex.pdfIn PDF document text
    • https://cdn.sqhk.co/wiwuwigo/dnxTVhe/geometry_rush_cool_math.pdfIn PDF document text
    • http://gazzsheff.xyz/4g_lte_android_phones_in_nigeriazycfy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000daf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF9 5308 bytes
SHA-256: 4b661b922471c617ef1724eef98dbf01bb6eb9064b13bbfe7e440d834ee19a49
font_01_sfnt_off0000ecd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD8 11188 bytes
SHA-256: fa31d2d0247188a07425efe91886364a74823ce2ebaf31f492f637cb0751f253