Malicious PDF — malware analysis report

Static analysis result for SHA-256 d66ff0c86e99df0a…

MALICIOUS

PDF

81.6 KB Created: 2021-03-20 22:13:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 497f380981563da3862f1afe4df61fee SHA-1: 21f243e3217d9a8ad1d84f26d55c735195713f0b SHA-256: d66ff0c86e99df0a46890327508f3088be7fab8c6e66ad003f7d90ebbf05f0c9
96 Risk Score

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 0.9997

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://dafemum.ru/strik?utm_term=husqvarna+125l+weed+eater PDF link annotation
    • https://cdn.sqhk.co/bidelefo/tjcKSjf/xatojom.pdfIn PDF document text
    • http://kijofizovurisos.medianewsonline.com/what_is_my_name_in_enochian.pdfIn PDF document text
    • https://cdn.sqhk.co/zulatobi/vjiggpI/free_gaming_screen_recorder_no_watermark.pdfIn PDF document text
    • https://cdn.sqhk.co/vibisimak/zhb73ac/pacman_not_working.pdfIn PDF document text
    • https://cdn.sqhk.co/duwokarewesu/KURLUhi/printable_gradebook_sheet_free.pdfIn PDF document text
    • https://cdn.sqhk.co/worekoxe/hqG9idW/zomaxubopimotebo.pdfIn PDF document text
    • http://rasudilikid.mywebcommunity.org/18894283553.pdfIn PDF document text
    • https://cdn.sqhk.co/wivenute/RyTibhg/28779551281.pdfIn PDF document text
    • https://cdn.sqhk.co/pixorikibam/jX7BnPb/download_elite_trials_mod_apk_android_1_coc.pdfIn PDF document text
    • http://levotavo.scienceontheweb.net/plot_diagram_of_dr_heideggers_experiment.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/liluvad/summer_bucket_list_2019_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/complete_list_of_dd_races.pdfIn PDF document text
    • https://s3.amazonaws.com/fajetufekejo/kugezig.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/rizodulovegudupudomosu.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/piano_adventures_level_3a_lesson_book_2nd_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/killing_floor_2_guide_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/remufuzu/xamarin_forms_binding_property_programmatically.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/english_creative_writing_worksheets_for_grade_1.pdfIn PDF document text
    • https://s3.amazonaws.com/lukepepe/xusuzupiwewezav.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/98391609569.pdfIn PDF document text
    • https://s3.amazonaws.com/votubukaxogilix/para_que_se_utiliza_el_aprendizaje_basado_en_proyectos_brainly.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_off0000fff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF5 5364 bytes
SHA-256: d20b5dd625070efe6033f6e11b696f8cb9709a7f8c4ecb78f127a760e24e25b3
font_01_sfnt_off0001125c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1125C 11444 bytes
SHA-256: b6df439f2b6ef305489090fe0ed9b172bbf4525e32c6bcf7bb216b2d72ea0377

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