Malicious PDF — malware analysis report

Static analysis result for SHA-256 93984573525a6c8c…

MALICIOUS

PDF

77.4 KB Created: 2021-03-09 15:40:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 20eba8dac23850920c7a5dcc0c2618d1 SHA-1: 981d05b3994e3fd332e8eb55daf9e3b064b4e398 SHA-256: 93984573525a6c8c67d2421efcef9544683145627edee307ed45776fba453d83
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is likely used to deliver a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, appears to be a lure related to a service manual.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://midufefew.ru/wix?keyword=2009+acura+tl+service+manual+pdf PDF link annotation
    • http://xulenegutuwovi.iblogger.org/98509219202.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/0jahiOz/marbleous_color_street.pdfIn PDF document text
    • https://cdn.sqhk.co/wolowivem/arifn8b/rokugepikerap.pdfIn PDF document text
    • https://cdn.sqhk.co/vipujitebiki/ia0Uxhf/download_ultimate_soccer_football_mod_apk.pdfIn PDF document text
    • http://lesuzod.iblogger.org/b_t_c_long_form.pdfIn PDF document text
    • https://cdn.sqhk.co/jutalufelex/08GigMw/durofuponovaxekiwurusesuw.pdfIn PDF document text
    • http://vuwobide.22web.org/eclipse_neon_for_ubuntu_32_bit.pdfIn PDF document text
    • http://kadesevi.iblogger.org/dividing_monomials_worksheet_answer_key.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/jozaponi/pulaxomufeligigizevixil.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/free_cv_template.pdfIn PDF document text
    • http://roweviwumi.epizy.com/cisco_firepower_2120_master_bundle_datasheet.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/whatsapp_status_in_punjabi_attitude_video.pdfIn PDF document text
    • https://s3.amazonaws.com/pegozegi/include_external_stylesheet_in_html.pdfIn PDF document text
    • https://s3.amazonaws.com/zuses/inequality_word_problems_worksheet_7th_grade.pdfIn PDF document text
    • http://robogotut.epizy.com/kannada_janapada_dj_songs.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/87627444247.pdfIn PDF document text
    • http://vunefukovamin.rf.gd/bhojpuri_gana_video_song_dj_remix.pdfIn PDF document text
    • https://s3.amazonaws.com/vuraradaso/early_adopter_program_smartsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xovajukoxin/badiwiweboj.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/92883388748.pdfIn PDF document text
    • https://s3.amazonaws.com/pibabopuduj/latest_android_phones_in_pakistan_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/freenas_9._2._1._9_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/sunumezejigir.pdfIn PDF document text
    • http://kosatalek.rf.gd/debt_forgiveness_letter_template.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_off0000e4d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D4 5468 bytes
SHA-256: 6af4e3d9115e4ec596037186b30c9fba0be76345fd200a37e3b72fc1bbc3a16c
font_01_sfnt_off0000f747.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF747 10152 bytes
SHA-256: c82a49c9ec873230e1311b72bf9c3efa28b417638a34a09a6dba34f1dd22b935
font_02_sfnt_off00011a0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A0F 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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