Malicious PDF — malware analysis report

Static analysis result for SHA-256 9397c536ca9d1367…

MALICIOUS

PDF

82.0 KB Created: 2021-03-13 17:41:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 236c094483c9bf682cb67afc7050f474 SHA-1: eed2477e547ea260517e82a83b0413ea694ce02c SHA-256: 9397c536ca9d13674500d3dd0ec2291dc3923575f6617a35d30a0ec364397350
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'xajibur.ru' suggests a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a lure to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xajibur.ru/123?utm_term=english+alphabet+capital+and+small+letters+pdf
    • https://cdn.sqhk.co/xiroxozalal/Uhcihp7/redagek.pdf
    • http://busivel.xyz/846183900672ih9d.pdf
    • http://sidesevofexow.22web.org/passive_and_causative_exercises_1_bachillerato.pdf
    • http://wowurilagufa.iblogger.org/44210182362.pdf
    • http://espacecmb.xyz/biwevorhyv6.pdf
    • https://cdn.sqhk.co/sokavuwoz/d1rha86/what_animal_are_you_quiz_accurate.pdf
    • http://nevogixire.22web.org/54558289026.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xabalaru/free_business_analyst_resume_templates.pdf
    • https://s3.amazonaws.com/fosagobomap/boehringer_ingelheim_canada_medical_information.pdf
    • https://s3.amazonaws.com/rebesudanolo/monarch_lathe_models.pdf
    • https://s3.amazonaws.com/datarofapakil/bivarigobegevudunanoj.pdf
    • https://uploads.strikinglycdn.com/files/6cb5fe40-d65e-419d-b55f-5986099fe734/zisomepulikibol.pdf
    • http://vejaxuka.epizy.com/agent_vinod_full_movie_watch_online.pdf
    • https://uploads.strikinglycdn.com/files/c16b265d-a3b1-4e0d-9f84-7ebbdf35893b/glass_bead_game.pdf
    • https://s3.amazonaws.com/kikunojulejuj/jamusobifudotakuzevut.pdf
    • https://uploads.strikinglycdn.com/files/d3f098c4-723a-44ec-be5e-f00cab8ff401/how_to_get_money_on_grand_theft_auto_5_cheat_codes.pdf
    • https://s3.amazonaws.com/fejatepudopito/anonytun_pro_apk_juli_2018.pdf
    • https://s3.amazonaws.com/zakunafu/believe_polar_express_trumpet_sheet_music.pdf
    • https://s3.amazonaws.com/fojaxexino/48798535354.pdf
    • https://uploads.strikinglycdn.com/files/0d53be1a-bdcc-4fb2-ad29-e6b25ca56af7/16425259260.pdf
    • http://magomodatibotu.epizy.com/63456978519.pdf
    • https://s3.amazonaws.com/pujinit/dufupob.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_off0001007f.bin
3d6fdedd7eee8450b65c5666624ec6886357682fda220b12bb4583a415f98a06
pdf-font-stream PDF embedded font (sfnt) at offset 0x1007F 5668 bytes
font_01_sfnt_off00011399.bin
98eee77b31ac2cebca05e44bea145bc6f733ce2f1467fde1290a941b6bde4a4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x11399 11544 bytes