Malicious PDF — malware analysis report

Static analysis result for SHA-256 24361d67c70acbcd…

MALICIOUS

PDF

71.9 KB Created: 2021-02-16 22:50:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 9e66126bde653f1ef42fa3a641db9bd7 SHA-1: 8b06fac877bf210413dd6ff613f02b49ae04b707 SHA-256: 24361d67c70acbcd7959e9cb8955ff7df9eb382a7d00c8af52bee66cec0fae5d
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=noico+80+mil+36+sqft In PDF document text
    • http://madifowagerotal.iblogger.org/chuunibyou_movie_sub_indo_mkv.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/HZnihun/word_nut_level_148_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/bofagenined/didhbge/julatozo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407316/normal_5fdc7e1332758.pdfIn PDF document text
    • http://xugafigipi.22web.org/viwabotajexofalak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485435/normal_5fc592b3277b3.pdfIn PDF document text
    • https://cdn.sqhk.co/zojixemem/RgdDbcA/axes_io_mod_apk_unlimited_money_download.pdfIn PDF document text
    • http://lupuneruw.iblogger.org/jawepubuzusumakisekepima.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402246/normal_6015d2817121f.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/datarofapakil/free_science_worksheets_forces_and_motion.pdfIn PDF document text
    • http://gujigaxofalolov.epizy.com/aashiqui_2_movie_songs_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/tikoweravisixu/common_core_sheets_order_of_operations.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/53247334675.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/apache_ant_1._10._1.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/51057549199.pdfIn PDF document text
    • http://lexawelezalum.epizy.com/83509216277.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/blackpink_stay_mp4.pdfIn PDF document text
    • http://notufexunu.rf.gd/super_30_song_basanti_no_dance.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/yuumi_jungle_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/vuxagixil/fajene.pdfIn PDF document text
    • http://jovurafop.epizy.com/batman_return_to_arkham_asylum_game.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_off0000dc57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC57 5472 bytes
SHA-256: bc2b2fb042280b8c571601c21ac09262c8f647ce56d5fa30376deaf3592206fa
font_01_sfnt_off0000eef7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF7 10388 bytes
SHA-256: 9339e8b32df8f0e076e7fe5c94c116cdeee9869b97789843c2b83e67e66bf7b1

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