Malicious PDF — malware analysis report

Static analysis result for SHA-256 20074fad87495b78…

MALICIOUS

PDF

71.2 KB Created: 2021-02-13 06:30:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab29253fda80881e097655fdba9037de SHA-1: 347d030650661914961a04434e48974db518d059 SHA-256: 20074fad87495b78fcea2c2ac857e7b95bf4ed0c4cf01409017097c668c6fbde
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains an embedded URL that redirects to a suspicious domain, masquerading as a geometry textbook. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or delivering a second-stage payload. No scripts were extracted, but the presence of an external URI is a primary indicator of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://maypoin.ru/wix?keyword=pre+ap+geometry+textbook
    • http://joy-todays.online/pillars_of_eternity_game_guidecrdln.pdf
    • https://static.s123-cdn-static.com/uploads/4424010/normal_5fece7ac0cd72.pdf
    • https://cdn.sqhk.co/kixarozikej/5u9NwFC/lokoturilinibebuxizo.pdf
    • http://bunokegezodidur.iblogger.org/larevupiwuloloziza.pdf
    • https://cdn-cms.f-static.net/uploads/4405413/normal_5fd60b71bf926.pdf
    • https://cdn.sqhk.co/xawobovuji/fljdijj/metugufag.pdf
    • http://sofisejulewog.22web.org/1849273885.pdf
    • http://shopbest.online/badman_binladin_energy_song0vfju.pdf
    • https://static.s123-cdn-static.com/uploads/4481695/normal_5fca49fe1951c.pdf
    • https://cdn.sqhk.co/sabimejuka/ilhegfl/space_drawing_apps_for_android_download.pdf
    • https://static.s123-cdn-static.com/uploads/4454819/normal_5ff575fb57cd4.pdf
    • https://cdn.sqhk.co/nuvexajamu/kdzxUia/dark_forest_mansion_minecraft.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://losikamadan.epizy.com/togoxuzezaranilidanev.pdf
    • http://zilomit.epizy.com/air_ticket_template_word.pdf
    • http://tesuzegijibonu.epizy.com/fiziwef.pdf
    • http://jovovifanovire.rf.gd/dashboard_bootstrap_templates_free.pdf
    • http://wereguvepowu.epizy.com/kerupuk_ampas_tahu.pdf
    • http://noxudovo.rf.gd/89315333266.pdf
    • http://junirawikuxu.epizy.com/discord_android_developers.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da66.bin
450f7f05548a60f640a7002f4a75bfeeba67c9104b74960799698ad09461b9b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDA66 5304 bytes
font_01_sfnt_off0000ec6d.bin
9d67ae490f7255a7a3035da578d8a43ba973e7f2eec885056d759976f0a399a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC6D 10388 bytes

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