Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d9bd7d96a8888af…

MALICIOUS

PDF

67.4 KB Created: 2021-02-11 21:10:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: c31a0d91b13e820d08817c9155d0ef7a SHA-1: b359578ca1dde5197b72d24bea5192667bbc5f9f SHA-256: 6d9bd7d96a8888af7c4f774f2933589c1725642ee3b7a11b45b1c140c9b24202
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://jacksth.ru/wix?keyword=west+springfield+high+school+sports+hall+of+fame PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408709/normal_5fc5aadc92e3d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493602/normal_5ff4c3db50a16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413454/normal_5fdbe5029d52b.pdfIn PDF document text
    • http://jelepasit.22web.org/sociology_of_education_lecture_notes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461511/normal_5fd8874b08c90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375210/normal_600e218f51288.pdfIn PDF document text
    • https://cdn.sqhk.co/gotulurowav/Czifhgi/xujiko.pdfIn PDF document text
    • https://cdn.sqhk.co/gesokusa/nieJNFD/scary_movies_on_netflix_september_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/sexuzoropa/ajiSpjb/nunetomu.pdfIn PDF document text
    • http://gexafozo.22web.org/avast_mac_antivirus_free.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421466/normal_5fd671831cc4a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383444/normal_5fc85b4db9411.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389820/normal_5ffc833989b91.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370987/normal_5fd12e63348c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385231/normal_5fd37a242fe22.pdfIn PDF document text
    • https://cdn.sqhk.co/xenetomapum/iKjbSgd/97366232979.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486213/normal_602527a7cac4e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gezixerigalejeb.rf.gd/46905655379.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_off0000c8fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8FE 5580 bytes
SHA-256: 6a1ad2aa2057ad854be95723b665487ee6762b7317f28fb15c5e04c0aa12da47
font_01_sfnt_off0000dbe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE1 10716 bytes
SHA-256: c8b3c97635c14f76d77570468b9c96fa9d5b2e02184fa551593b375ee2a0e923