Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ed57721ed15f2c1…

MALICIOUS

PDF

70.4 KB Created: 2021-02-09 19:34:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f5b02731f8babddfb26dd00b78cb6efc SHA-1: b2a8f75c4f725f4bf3b95aaf7ddae61327e6643a SHA-256: 5ed57721ed15f2c12893b6a7a603347dc2f1de49cc26a973e8f1a540469568b8
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/aws?utm_term=musica+per+bambini+rancore++gratis PDF link annotation
    • http://sarkife.site/aambala_video_song_starmusiqg1w50.pdfIn PDF document text
    • http://tumbochka.space/rs_aggarwal_quantitative_aptitude_download1lxry.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449602/normal_5ff3373c61d20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450426/normal_5fd090c3c9a74.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369773/normal_5ff675b12076a.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvotalek/Bhb3Uvh/46110894392.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366346/normal_600189348e006.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372080/normal_6016cac296659.pdfIn PDF document text
    • https://cdn.sqhk.co/zabitokepum/oMz9Wif/metal_slug_character_differences.pdfIn PDF document text
    • http://shoop-fg.ru/5639600920202g5u.pdfIn PDF document text
    • http://meetcabinets.xyz/wazukorevubanetusaz65kec.pdfIn PDF document text
    • https://cdn.sqhk.co/padixemugex/BUgjgje/dizzy_after_eating_covid_19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427104/normal_60151c1a0c7e6.pdfIn PDF document text
    • https://cdn.sqhk.co/vedimofaw/hcgpkgi/shortcut_run_game_online.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366316/normal_5ffbd4a4c8de4.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_off0000d3cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3CD 5368 bytes
SHA-256: a1cd6e9f5031039b20eabb589c8373901ad25c0a86909092dff08e1448e5dc0a
font_01_sfnt_off0000e600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE600 12044 bytes
SHA-256: 1f9bfd48456cb1f89187a9c86753fc9c286db802aba1a002b3d69624d2a9f11b