Malicious PDF — malware analysis report

Static analysis result for SHA-256 e63f9dee303b66c3…

MALICIOUS

PDF

68.5 KB Created: 2021-02-21 10:00:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 641d9bf966b7146ec7e9c02bf744d752 SHA-1: 2c9d71e8d90e53dcc9886bb020ca624ea1e4da57 SHA-256: e63f9dee303b66c3ae07c82398eab4c20818f0e20c3568138de8d1ba2444f0a3
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/wix?keyword=asu+beebe+fall+2020+calendar PDF link annotation
    • https://cdn.sqhk.co/navuwamas/yjjhjif/best_assistant_for_android_phone.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487641/normal_5fccd82d8bde7.pdfIn PDF document text
    • https://cdn.sqhk.co/rogenujudita/HjijLib/15632530997.pdfIn PDF document text
    • https://cdn.sqhk.co/pevejotomoma/gciajhO/76684659167.pdfIn PDF document text
    • https://cdn.sqhk.co/xawefigi/bgjiahd/geditukod.pdfIn PDF document text
    • https://cdn.sqhk.co/silijebutu/jiyjdP0/jebodawaribunodok.pdfIn PDF document text
    • https://cdn.sqhk.co/mofijovelu/d3RttEB/planetary_nebula_size_compared_to_sun.pdfIn PDF document text
    • https://cdn.sqhk.co/gujadozede/wgjHii4/83577827133.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418972/normal_5fd64a598f5f1.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/voropa/basoremofipuzopumizi.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/najozurojinowu.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/avast_latest_version_free_with_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/dinigugaxej/31883255893.pdfIn PDF document text
    • https://s3.amazonaws.com/tonemakopinibem/what_is_the_best_bible_study_book.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/puxukurixumif.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/nijogonavanemunoguk.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_off0000d0a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A5 5420 bytes
SHA-256: 5b4de6018db3d8dd129c5aeeea1b6987faab1fa1e60fc99e856668147d757306
font_01_sfnt_off0000e31e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE31E 9908 bytes
SHA-256: f49063662909256f8202d6ac985b4d27a9c8c7ce7fc1cdbfadb5383fdb6e261d