Malicious PDF — malware analysis report

Static analysis result for SHA-256 2504c326f029f118…

MALICIOUS

PDF

76.1 KB Created: 2021-01-26 13:18:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-31
MD5: 4450da3544ea4fc8b635c06a3a70c018 SHA-1: 2896c0ff7d74c5cbba1f813259b842eab1e9e146 SHA-256: 2504c326f029f11890a6ba656707fd34014413aa8bffe8c1a7890284cd010e5d
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://trafftec.ru/123?utm_term=devil+in+the+white+city+summary+sparknotes PDF link annotation
    • http://ru-1.casa/bezudimalasuza1stub.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479254/normal_5ffa40e638b72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495265/normal_5fddf9dac7488.pdfIn PDF document text
    • https://cdn.sqhk.co/dutebevon/fibjjij/62011702386.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366325/normal_5fcb75781cedb.pdfIn PDF document text
    • http://kufigada.22web.org/caractersticas_del_aprendizaje_significativo_y_memorstico.pdfIn PDF document text
    • https://cdn.sqhk.co/wujejelot/igCOhb5/deathrun_portable_mod_menu_apk_2._6._1.pdfIn PDF document text
    • http://instas.site/kagilotovap2lbsf.pdfIn PDF document text
    • https://cdn.sqhk.co/lozuzupadis/bJjbChh/monster_park_ar_dino_world.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489975/normal_5ff0eb6977572.pdfIn PDF document text
    • https://cdn.sqhk.co/juvexafi/SuRNGIw/red_sunrise_background.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482002/normal_5ffb273ad549e.pdfIn PDF document text
    • https://cdn.sqhk.co/kupejabel/EE2jjih/snake_game_play_snake.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482228/normal_5ff2bbe7bd63e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469103/normal_5fc9e7f68b055.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kesotufujurox.rf.gd/wiwobenifinubikatibasabu.pdfIn PDF document text
    • http://xofududegotu.epizy.com/inverse_of_3x3_matrix_worksheet.pdfIn PDF document text
    • http://topufopotu.epizy.com/iphone_alarm_tone_for_android.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_off0000ee42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE42 5492 bytes
SHA-256: b3a0d479055e3aaddc3afee90da139853e4a7a0a12156a4031d3be060d0df144
font_01_sfnt_off000100e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100E3 10044 bytes
SHA-256: bcede600f9d7f4c881ea35146a89b9af1814ce73f95e4539ef036de7966f85ec