Malicious PDF — malware analysis report

Static analysis result for SHA-256 9db06b28641b6c48…

MALICIOUS

PDF

81.8 KB Created: 2021-03-22 20:16:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 28c83e627bcd7f28f6e5d26dd71dc794 SHA-1: 574fe0cc8628c967ba75fefd10321b14ae2ee61c SHA-256: 9db06b28641b6c4841380edf345208bec65f4bd1d899ed76107a372fe38f7272
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://crophysi.ru/123?utm_term=angle+pair+relationships+quiz+pdf PDF link annotation
    • http://fukerijinexin.mygamesonline.org/old_kitchenaid_stove_models.pdfIn PDF document text
    • https://cdn.sqhk.co/zamokaxu/dhdhZhi/tedol.pdfIn PDF document text
    • http://sitizinudex.getenjoyment.net/how_often_should_you_regenerate_water_softener.pdfIn PDF document text
    • https://cdn.sqhk.co/xerejijasoma/dWhbDhd/up_first_newsletter.pdfIn PDF document text
    • http://duvejiwuxikon.getenjoyment.net/laxitalese.pdfIn PDF document text
    • http://toleritikujomuj.22web.org/suzonatovegaboturapogojap.pdfIn PDF document text
    • https://cdn.sqhk.co/sixerusesebu/hf2QLja/among_us_wallpaper_4k_for_laptop.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/satie_je_te_veux_sheet_music.pdfIn PDF document text
    • http://pitigapevede.onlinewebshop.net/wexuxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1102ab1c-ddc0-404e-a71e-cc2088bf851a/chartered_financial_analyst_cfa_exam.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/36136351839.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/gadejirexagifejaro.pdfIn PDF document text
    • http://wogokafen.epizy.com/departamento_del_caqueta.pdfIn PDF document text
    • http://davinawoguzag.atwebpages.com/gagixobudiredupedigala.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/lagosawafixug.pdfIn PDF document text
    • https://s3.amazonaws.com/tinivukedeta/acidic_and_alkaline_foods.pdfIn PDF document text
    • https://s3.amazonaws.com/ropuba/2019_tahoe_rst_performance_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/38979564330.pdfIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/blank_timeline_template_word.pdfIn PDF document text
    • https://s3.amazonaws.com/ratixifo/saxojuxedudugamepozedeta.pdfIn PDF document text
    • http://siloxatomikuje.rf.gd/benzyl_chloride_formation.pdfIn PDF document text
    • http://lisotabisalak.epizy.com/veneluxukulokobobasaf.pdfIn PDF document text
    • http://woxariwete.rf.gd/business_analyst_reporting_line.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e55a5195-f5cc-4950-8cf2-9e7f258eb73b/romeo_and_juliet_character_analysis_chart.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA75 5468 bytes
SHA-256: bea8bfdf5251ae3171effa0163add531a2da8369bbb6bfb3548d7abfbf3f02dc
font_01_sfnt_off0000fd0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD0E 11640 bytes
SHA-256: f7a8102231a93cc27ec24964310636a90ca56b9907849b09902cf7a0979ed05e
font_02_sfnt_off000124dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124DC 16072 bytes
SHA-256: f3b752e25d2e3098dc5b351a512c5ca672d2b137fcb7ddb3f81b2384be51d5c3

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