Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc6989df829c19ac…

MALICIOUS

PDF

82.8 KB Created: 2021-03-17 00:51:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b0a2f14a1bd24b989227ced1e5191ca7 SHA-1: 3b3c9c62f8857c5cb71ffe1030e51d6733bfe41e SHA-256: bc6989df829c19aca080c7b8f4e33a790e16f09b792d3907e242954cfefffd31
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. It contains numerous embedded URLs, one of which is presented as a Stihl trimmer parts diagram, likely a lure to trick users into clicking. The presence of embedded URLs suggests the document is designed to redirect users to malicious sites for phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://resalured.ru/strik?utm_term=stihl+fs+56+rc+trimmer+head+parts+diagram
    • http://servisvds.ru/pewitunufamgx27.pdf
    • http://sufawevugut.mywebcommunity.org/58909672472.pdf
    • https://cdn.sqhk.co/tuxisilogok/Jhejhgj/teaching_assistant_qualification_requirements_uk.pdf
    • http://xsale.trade/4x4_offroad_jeep_hill_drivingrs4r6.pdf
    • http://dreamingdeveloper.com/tefal_oleoclean_deep_fryer_with_oil_filtration__storagev4wz6.pdf
    • http://cleaner360.shop/85619024285fzmog.pdf
    • http://robugipunebib.mygamesonline.org/how_to_clean_filter_on_dyson_dc25.pdf
    • https://cdn.sqhk.co/fovulifavu/hbhb9bP/82008704906.pdf
    • https://cdn.sqhk.co/madeparev/xihgjgj/consolidated_report_format.pdf
    • http://skout.tech/magicians_of_the_gods_hardbackyzxh3.pdf
    • http://xebiniseba.mygamesonline.org/sujadifimiwakizutepenobif.pdf
    • https://cdn.sqhk.co/kuzetuzame/hbcjaVo/35018332971.pdf
    • http://garanibukumom.scienceontheweb.net/musewusinimon.pdf
    • https://cdn.sqhk.co/jotepomi/jihTmja/negin_mirsalehi_instagram_vs_reality.pdf
    • https://cdn.sqhk.co/nexuliwadi/S4wjshf/last_day_on_earth_survival_ios_gameplay.pdf
    • https://cdn.sqhk.co/kobewudojuvo/ihxVjgo/yeezy_700_v3_arzareth_retail.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kuxemozoxabonag.onlinewebshop.net/how_to_connect_ilive_soundbar_to_phone.pdf
    • http://zapusov.atwebpages.com/presentational_and_representational_acting.pdf
    • http://ritumogadoj.onlinewebshop.net/comparative_and_superlative_short_adjectives_worksheet.pdf
    • http://kawerulim.onlinewebshop.net/power_xl_air_fryer_cooking_times.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_off000100b2.bin
2b0026db641d7c733f6db79dae219c012c133dcfbf0af7450b45cd6cd13dc0a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x100B2 5948 bytes
font_01_sfnt_off000114ce.bin
d970f1b20f954e4cf808a879fca1f7c202f7b616b1e48bdb8a96dd0d765ed084		 pdf-font-stream PDF embedded font (sfnt) at offset 0x114CE 11512 bytes

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