Malicious PDF — malware analysis report

Static analysis result for SHA-256 25214ed4578665f9…

MALICIOUS

PDF

68.3 KB Created: 2021-02-14 20:56:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ec1ce71b3459ce579a1f51982800eb92 SHA-1: 06be598908b67b47c95cfe81458595a28a4d5183 SHA-256: 25214ed4578665f98002d17fad4720d3c4392c7e0a6b432d193a43eb7ed8b050
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/wb?keyword=bmw%20s1000rr%204k%20wallpaper PDF link annotation
    • http://moreprodukti.com/22_se_srabon_songseosxk.pdfIn PDF document text
    • https://cdn.sqhk.co/totimujid/ayjiLLl/rudoborabupudonapetofuku.pdfIn PDF document text
    • http://koreanluxe.com/odyssey_with_line_numbers9kaj7.pdfIn PDF document text
    • http://domastmsk.space/30573970459my9ib.pdfIn PDF document text
    • http://beach-fruit.fun/102918816206srhk.pdfIn PDF document text
    • https://cdn.sqhk.co/xopuwatipo/6ghYkhf/20837720151.pdfIn PDF document text
    • http://kyhni.site/tosuwifavujenilifoderogipsz2gg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464297/normal_5fcb5aa1d6ef7.pdfIn PDF document text
    • http://jsexj.fun/73347462668rxatc.pdfIn PDF document text
    • http://iciko.xyz/mutoturuguzitelufrwkc.pdfIn PDF document text
    • https://cdn.sqhk.co/seworani/li7jaia/zebutorikolixagigu.pdfIn PDF document text
    • http://termometr-medikal.site/soxusigetutikanelakiwuodgwm.pdfIn PDF document text
    • http://braco.ru/25831119874m1u32.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/xukirizugukugi/doorbell_chime_sound.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/31082275647.pdfIn PDF document text
    • https://s3.amazonaws.com/lebejos/98144427551.pdfIn PDF document text
    • https://s3.amazonaws.com/nitidadufetenu/gawot.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/worksheet_on_day_and_night_grade_2.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_off0000c6d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC6D2 5452 bytes
SHA-256: f4c12c782509316639a9177810dc8ac3a7cc9de655893e812a2186cd1f3ec6f1
font_01_sfnt_off0000d963.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD963 12092 bytes
SHA-256: 05e71b83330b248cc07f0aa7413f5d6a9aacbadae39579a057ee8ba7ee7fbb17