Malicious PDF — malware analysis report

Static analysis result for SHA-256 0221ebba322037f9…

MALICIOUS

PDF

92.3 KB Created: 2021-03-27 22:21:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9438957efdf2a768fb1d5adb7cef3fd SHA-1: 1b8dbc3bd3d2cd005ab051823fd50dd2a7cedf76 SHA-256: 0221ebba322037f931bf5cec24235cf38ced3eb3be0a8a59e9d190c9c5c6e430
96 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one prominent URL suggesting a phishing or malware delivery attempt related to grant information. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a phishing lure designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://botokaw.ru/aws?utm_term=is+cal+grant+the+same+as+state+university+grant
    • https://cdn.sqhk.co/badiboxa/gdxXiiz/360_horror_vr.pdf
    • http://sesizuxewewax.mygamesonline.org/nubizadedafamemepofasof.pdf
    • http://ruwosiju.getenjoyment.net/explain_how_humans_depend_on_the_environment.pdf
    • https://cdn.sqhk.co/xatimonixu/IhdXlt7/56560983318.pdf
    • https://cdn.sqhk.co/sewuvavimebi/Vsibgdd/hockey_fights_cancer_jersey_blackhawks.pdf
    • https://cdn.sqhk.co/bogofuvizibu/ieXjdgd/vpn_server_korea_apk.pdf
    • http://bivaxosufuxibo.mygamesonline.org/what_are_rhetorical_devices_in_literature.pdf
    • https://cdn.sqhk.co/zefipuvuwifi/Lgdieha/shipping_manager_job_description.pdf
    • http://zovitidagawas.sportsontheweb.net/fagewalaxuda.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/c9b51fde-2b79-4303-bd33-2b5a304bf354/52961931015.pdf
    • https://s3.amazonaws.com/megodipewukitoj/48103496251.pdf
    • https://s3.amazonaws.com/kavugusepe/emotionally_intelligent_leadership_shankman.pdf
    • https://uploads.strikinglycdn.com/files/8bc9cea3-50ec-45f1-a0f3-8a3bc021d02f/dibizexesezemim.pdf
    • https://uploads.strikinglycdn.com/files/782dc5fe-808b-474d-9caf-de987a15e230/fundamentos_de_marketing_philip_kotler_y_gary_armstrong_descargar.pdf
    • https://s3.amazonaws.com/kigavanus/pijizi.pdf
    • https://s3.amazonaws.com/wokesabisevo/86819625436.pdf
    • https://s3.amazonaws.com/wujapu/39435742470.pdf
    • https://s3.amazonaws.com/fasudikek/how_to_close_a_income_summary_account.pdf
    • https://s3.amazonaws.com/nafoxuda/24557318899.pdf
    • http://wozimape.onlinewebshop.net/absite_fiser.pdf
    • https://s3.amazonaws.com/fenatagazise/clarinet_sheet_music_star_spangled_banner.pdf
    • https://uploads.strikinglycdn.com/files/f54a925e-8cc1-44ce-a296-65285d614dda/setup_fios_router.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000105aa.bin
8a3a3fee54bba55ab03f335e599389cb175fb98bb0f74e358d1ef122aecba3ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105AA 5084 bytes
font_01_sfnt_off000116be.bin
e0c9e1c972e3e611183fd6ab0ad51bc06151c0507ff6533950f6e4f1427c400c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x116BE 11832 bytes
font_02_sfnt_off00013f82.bin
561f812873edee893358484a1d0b15725aafdee0cf7f20b6ea7f7f5924cce937		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13F82 16232 bytes
font_03_sfnt_off000154de.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x154DE 4324 bytes

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