Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d914c2c96fde480…

MALICIOUS

PDF

83.0 KB Created: 2021-02-13 01:22:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f50d4492e2c9f15fd8bc3f6863bbeba7 SHA-1: af8b96a137a2d85a92ad5f3c6544f1e7af22499a SHA-256: 7d914c2c96fde480c663b28c50c847163cb40c29d0174ae7ed487cce0b25a084
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://leonvi.ru/aws?utm_term=ipcc+cryosphere+report+2019 PDF link annotation
    • https://cdn.sqhk.co/gupetipek/zjpgdid/go_all_night_long_lyrics.pdfIn PDF document text
    • https://defosojuregoko.weebly.com/uploads/1/3/1/3/131383900/xedidetupov-pilojixese-lededadilenujag.pdfIn PDF document text
    • https://suzoniku.weebly.com/uploads/1/3/4/4/134456843/de8f658f5469e30.pdfIn PDF document text
    • https://cdn.sqhk.co/kelufuro/6ienih1/shark_4k_video_live_wallpaper_download.pdfIn PDF document text
    • https://muvanuxeb.weebly.com/uploads/1/3/4/0/134096654/3948590.pdfIn PDF document text
    • https://cdn.sqhk.co/forokuxodel/jfggFfu/74471912974.pdfIn PDF document text
    • https://cdn.sqhk.co/bidogefapo/mOgfkjj/limano.pdfIn PDF document text
    • https://cdn.sqhk.co/vopovaroxamo/isWGicy/experience_playstation_nyc.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/xulepiwa/barriers_to_innovation_and_creativity.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/lujimonukodo.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/bicol_university_college_of_nursing_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/nasowuvuk.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/bilepinexofiga.pdfIn PDF document text
    • https://s3.amazonaws.com/fisulefajow/free_printable_cursive_worksheet_maker.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/c._b._s._e_guide_app.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_off00010502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10502 5300 bytes
SHA-256: 48a8c7fd589afcf45d2061ac7ba1a36943347491096febc8969ccf5d88537dbc
font_01_sfnt_off00011713.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11713 11848 bytes
SHA-256: 9e1f0732b17f1a6aae7f8ee2279fba8f782cbe5b5a34c705c8003faef6f97f29