Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b1b59f1f184a5ca…

MALICIOUS

PDF

75.9 KB Created: 2021-04-03 02:01:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b7cf6c576115bb63815cb9196071f46d SHA-1: 810f7836bed396a123f428bc92b5ea4611ae0e68 SHA-256: 6b1b59f1f184a5caeada517fb51fcb5affdab7633ac80e7a508659096aadd1d1
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 0.9960

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://seumenha.ru/award?keyword=needle+bearing+size+chart+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4448733/normal_5fc8c8ff5fb23.pdfIn PDF document text
    • http://xulodol.mygamesonline.org/muwekemonaxexofubumawik.pdfIn PDF document text
    • https://cdn.sqhk.co/kiribikiv/isRgfgh/92319152693.pdfIn PDF document text
    • https://cdn.sqhk.co/senagoxosog/6jazhcs/how_to_draw_anime_hair_very_easy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477147/normal_60146b281bb2b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452372/normal_5ff31bc918db1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425726/normal_6041563200a7f.pdfIn PDF document text
    • https://cdn.sqhk.co/savunowudob/O6vJnjf/tasubiwatosixaxozanis.pdfIn PDF document text
    • http://gekodejevotug.medianewsonline.com/excel_vba_function.pdfIn PDF document text
    • http://gosepakaf.getenjoyment.net/magisterium_livro_4_download.pdfIn PDF document text
    • http://kejurudoji.medianewsonline.com/auditoria_de_recursos_humanos.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/kovibu/what_setting_on_a_stove_is_300_degrees.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/big_green_egg_recipes_spare_ribs.pdfIn PDF document text
    • http://memuwalarike.rf.gd/sun_system_accounting_software_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rumezo/troy_bilt_storm_2410_spark_plug_ngk.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/31710888706.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/asura_s_wrath_for_pc.pdfIn PDF document text
    • http://delanuzapuz.rf.gd/thesaurus_english_dictionary_free_download.pdfIn PDF document text
    • http://tonezifimoraga.epizy.com/printable_phonics_worksheets_phase_5.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/onenote_app_dark_mode_android.pdfIn PDF document text
    • http://gurevome.rf.gd/practice_makes_perfect_french.pdfIn PDF document text
    • http://vimabamavarona.epizy.com/16797167434.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/antiphospholipid_syndrome_treatment.pdfIn PDF document text
    • https://s3.amazonaws.com/gazivemon/29277761626.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/lajajutakimutonokonusufo.pdfIn PDF document text
    • https://s3.amazonaws.com/zulezov/ina_industrija_nafte_annual_report.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ebc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBC4 5576 bytes
SHA-256: 224b6d09324bfe47eaede95728c91d8fc8ae27433c02a6aa9a422350334a843e
font_01_sfnt_off0000fec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEC1 10292 bytes
SHA-256: 598c911cde64e5cbbb2370a935c524eb48fd1a560a08a6d440a046451c21abc8

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