Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b17a952d91dd558…

MALICIOUS

PDF

73.8 KB Created: 2021-03-15 08:53:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 1159c660282ef4ae95a43eb1ceb5fe76 SHA-1: 80834b6d25fd1d7a9f886d0114ba90cd53d6d69b SHA-256: 3b17a952d91dd5588b935d7f58bcd3f8afbe68529955ddb524f7222bcb24d3d6
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to a URL that mimics a search result, likely to trick the user into visiting a phishing or malware distribution site. No scripts were extracted, but the PDF structure and embedded URI suggest an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/wix?keyword=ultimate+field+trip+5+answers PDF link annotation
    • https://cdn.sqhk.co/nilamemiw/euCDzih/nasty_gal_dresses_plus_size.pdfIn PDF document text
    • http://jafinipu.scienceontheweb.net/agenda_de_boda_2020_gratis.pdfIn PDF document text
    • http://nemagufi.mywebcommunity.org/73143418776.pdfIn PDF document text
    • https://cdn.sqhk.co/letopoto/iXAGn6N/3d_ball_balancer_extreme_adventures.pdfIn PDF document text
    • https://cdn.sqhk.co/turanexode/jbsHTFe/jejulolubuzozevod.pdfIn PDF document text
    • https://cdn.sqhk.co/rikopekela/8nqBiju/77364421318.pdfIn PDF document text
    • http://nariwunuzaw.scienceontheweb.net/memuxaxokolu.pdfIn PDF document text
    • https://cdn.sqhk.co/wexunaveb/jV8ihSc/exorcist_cast_deaths.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tetenifeme/nccn_guidelines_renal_cell_carcinoma_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/carcinoma_cervix.pdfIn PDF document text
    • http://wepogevadapafa.atwebpages.com/synthesis_essay_sample.pdfIn PDF document text
    • http://xobebol.onlinewebshop.net/number_analogy_tricks.pdfIn PDF document text
    • https://s3.amazonaws.com/wejuvono/sticker_pack_for_whatsapp_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7d33745-f02d-4897-ad39-2e4e36d4d342/xitapifunafolawixetikoja.pdfIn PDF document text
    • https://s3.amazonaws.com/bokelur/57019571474.pdfIn PDF document text
    • https://s3.amazonaws.com/muvojugejoxip/mara_3d_human_anatomy_full_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/bevarolimesale/jeopardy_game_template_for_education.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/44175320911.pdfIn PDF document text
    • http://tameladizikep.atwebpages.com/78890205478.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b49e746-bf85-46d1-a286-8847026f208a/sodix.pdfIn PDF document text
    • https://s3.amazonaws.com/poresi/austria_league_table_form_stats.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD488 5072 bytes
SHA-256: a173821b8abe91cc5800f599d6160617a92952c96eed8dad2a90ca8aa186944a
font_01_sfnt_off0000e5b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5B9 11092 bytes
SHA-256: 0826b25572ada28284fdf15d75df14d1f952f78ed4c145a306f8458d20b1995a
font_02_sfnt_off00010b7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B7A 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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