Malicious PDF — malware analysis report

Static analysis result for SHA-256 43910888059f01b4…

MALICIOUS

PDF

79.4 KB Created: 2021-03-31 20:41:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: fe485818f42fe1a1d341596159d00d32 SHA-1: 3e98135fe47abdfbea8df3b6c0502e79d3aed8da SHA-256: 43910888059f01b4cd9600ec8dce5b127a74b8dfeab565342dbefffd8517b3e2
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'zajinet.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'Al quran free uptodown', aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://zajinet.ru/123?utm_term=al+quran+free++uptodown PDF link annotation
    • http://xekalabaxuv.medianewsonline.com/absolute_power_of_questioning.pdfIn PDF document text
    • https://cdn.sqhk.co/perigupa/eijyhj0/payal_bajni_lado_piya_free.pdfIn PDF document text
    • https://cdn.sqhk.co/zakolemafemo/jjgjiiq/64562694967.pdfIn PDF document text
    • http://xufelofimu.22web.org/tamil_language_windows_7.pdfIn PDF document text
    • http://vitofemegawe.getenjoyment.net/lomixuvelogutomukodowaxug.pdfIn PDF document text
    • http://zuxenegobepejij.22web.org/principles_of_arusha_declaration.pdfIn PDF document text
    • https://cdn.sqhk.co/ditetona/Q8jfz3Z/photo_video_editor_with_music_apk_download.pdfIn PDF document text
    • http://newapegujopabi.22web.org/67632795850.pdfIn PDF document text
    • http://ribavid.medianewsonline.com/zelikojotisalilitaz.pdfIn PDF document text
    • https://cdn.sqhk.co/dawiredi/gtjcf3V/boss_song_video_hdyaar.pdfIn PDF document text
    • http://toxipoxekej.medianewsonline.com/31626490184.pdfIn PDF document text
    • http://lorutupaxuposu.22web.org/2_dimensional_array_in_c.pdfIn PDF document text
    • https://cdn.sqhk.co/gejupajo/Z1mijI9/carx_drift_racing_lite_mod_apk_obb.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/lonozote/manajemen_sumber_daya_manusia_1.pdfIn PDF document text
    • http://wimanugobupu.epizy.com/64174380204.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/ansible_tower_setup.pdfIn PDF document text
    • http://suxorodefis.epizy.com/rusege.pdfIn PDF document text
    • http://fuvimexapa.rf.gd/60774796522.pdfIn PDF document text
    • http://jomewudixaf.epizy.com/yoga_exercise_for_back_pain_with_pictures.pdfIn PDF document text
    • https://s3.amazonaws.com/wetevali/elementary_homeschool_report_card_template.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/esv_large_print_personal_size_bible_cloth_over_board_sunflower.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/tiwojom.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_off0000f6f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F1 5064 bytes
SHA-256: 929d1ad81a0bdc7bb4ad495b5dddf8cdc4aad7bb2375e83e475a8f6719d82438
font_01_sfnt_off0001084e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1084E 11268 bytes
SHA-256: f075fdab59ddf78a3a4032fd45a4f534d16cbe365869c3d8ef16d8d8249c36c5

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