Malicious PDF — malware analysis report

Static analysis result for SHA-256 5215d370a1c424ab…

MALICIOUS

PDF

78.2 KB Created: 2021-03-10 04:38:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: bed26f01342bff7bdc17ff66b0ebe907 SHA-1: 4c418a79e1246993eba64ffd411058316acc45ab SHA-256: 5215d370a1c424ab29e81e7c71db5b094443f7417744425261637c10c20874be
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and the document body suggests it is a practice exam, which is a common lure for phishing. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary URL, https://seumenha.ru/aws?utm_term=college+algebra+practice+exam+1, is likely used to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/aws?utm_term=college+algebra+practice+exam+1 PDF link annotation
    • http://fiwamixos.iblogger.org/internet_of_things_ieee.pdfIn PDF document text
    • http://xudisoda.66ghz.com/audio_technica_ath-_dsr7bt_manual.pdfIn PDF document text
    • http://ketaton.mywebcommunity.org/how_to_activate_function_keys_on_keyboard.pdfIn PDF document text
    • https://cdn.sqhk.co/vilosezuj/ecOgcuR/android_emulator_command_prompt.pdfIn PDF document text
    • https://cdn.sqhk.co/gaxomawelej/hhjhdge/dish_anywhere_not_working_after_update.pdfIn PDF document text
    • http://vemasujananexu.22web.org/power_wheels_dune_racer_extreme_battery_life.pdfIn PDF document text
    • https://cdn.sqhk.co/rijomawonuj/3gcyARW/free_fire_hd_wallpaper_2020_dj_alok.pdfIn PDF document text
    • http://xijonofupawulo.mypressonline.com/how_long_does_a_dyson_cordless_battery_last.pdfIn PDF document text
    • http://tebafurunaxinuj.getenjoyment.net/norazugepobaxe.pdfIn PDF document text
    • https://cdn.sqhk.co/feletitami/fIK1ENj/89639949737.pdfIn PDF document text
    • https://cdn.sqhk.co/sumavevop/gvjcrcc/that_got_you_song.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/genukopapovixo/mechanical_engineering_salary_uk_2019.pdfIn PDF document text
    • http://vekejuf.atwebpages.com/75487831898.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/forms_of_idolatry_in_kenya_today.pdfIn PDF document text
    • http://jirizaxewusi.epizy.com/los_acuerdos_de_san_andres_larrainzar.pdfIn PDF document text
    • https://s3.amazonaws.com/zabejuvijolu/blackstar_id_core_40_weight.pdfIn PDF document text
    • http://gorobibo.epizy.com/37271066083.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/what_is_the_importance_of_k_to_12_curriculum.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/manual_maquina_de_coser_brother_ls-2125.pdfIn PDF document text
    • http://vabepevid.epizy.com/dark_souls_3_wiki_build_calculator.pdfIn PDF document text
    • http://pimobepetokonud.myartsonline.com/36680680547.pdfIn PDF document text
    • https://s3.amazonaws.com/dowadotiju/que_es_la_enfermedad_tdah_en_nios.pdfIn PDF document text
    • https://s3.amazonaws.com/nawosineromigi/multicultural_palliative_care_guidelines_australia.pdfIn PDF document text
    • http://kubuxakul.epizy.com/69600669482.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_off0000e600.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE600 5040 bytes
SHA-256: 61605e915b0f12e95c4c76dfccfa736dc7fef06554c550b416e2f8e21f0472f2
font_01_sfnt_off0000f737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF737 11204 bytes
SHA-256: 4a63bb5476b6c08cada3c260fc3ab523a573ee7ac5ac98ebb485e8c4170ef256
font_02_sfnt_off00011d2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D2B 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

Open this report in the interactive analyzer, or submit your own file for analysis.