Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7179bbb145acc84…

MALICIOUS

PDF

82.6 KB Created: 2021-04-02 13:05:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: af5b68f60045c45f1a07b4b1dd4fba22 SHA-1: 73bb048c37b7aabc5a09a689f26f4e01eb6d8b42 SHA-256: b7179bbb145acc84bb6cd5959238a7ed00df0a3e53c2278459dd0ddc6568eb42
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body and embedded URLs suggest a lure for downloading a PDF, likely containing a malicious payload. The presence of external URIs points to the download of a secondary stage or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://vilenefex.ru/award?keyword=free+download+bukhari+sharif+in+urdu+pdf+file
    • https://cdn.sqhk.co/tejilunuf/xjhidjg/dancing_road_color_ball_run_download.pdf
    • https://cdn.sqhk.co/wibononuve/gd3lgjl/dragon_ball_legends_twitter_v_jump.pdf
    • https://cdn.sqhk.co/pefisemise/lgdVqW4/sisters_thai_fairfax_phone_number.pdf
    • https://cdn.sqhk.co/xomatujod/hiDhhAv/tibigulis.pdf
    • http://xiwotafajiloluf.22web.org/rashtriya_khadya_suraksha_yojana_form.pdf
    • http://bowugimigu.22web.org/jelupisiwot.pdf
    • https://cdn.sqhk.co/goduwonon/ie3icih/jezokumigilawizo.pdf
    • https://cdn.sqhk.co/titabofasika/hflxOfa/old_car_horn_sound_ringtone_download.pdf
    • https://cdn.sqhk.co/zujijivopuju/rzqLgcI/gtr_speed_rivals_android_1.pdf
    • https://cdn.sqhk.co/xusarukave/Vjhicq7/68928774088.pdf
    • https://cdn.sqhk.co/folikulezig/jbGgfig/nisakupakekomegakuzem.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://sawotopedexorod.epizy.com/gizelapegekizakerub.pdf
    • https://s3.amazonaws.com/suxiweke/t2_trainspotting_imdb_parents_guide.pdf
    • https://s3.amazonaws.com/fajeloninesitel/ziludonivus.pdf
    • https://s3.amazonaws.com/zarevizebi/pijefurubepedixowiwidatu.pdf
    • https://s3.amazonaws.com/woxorojero/chaos_book.pdf
    • http://jazoxuxorilule.epizy.com/ejercicios_de_clasificar_palabras_en_agudas_llanas_y_esdrujulas.pdf
    • https://s3.amazonaws.com/divikufifir/bleacher_report_nfl_picks_week_8_2018.pdf
    • http://kivekedifewu.rf.gd/hd_movies_apk_for_android_tv.pdf
    • http://femavumifixomud.rf.gd/37271893152.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e2cf.bin
eeab01cb61afb0d8e28408a48d3b15e775f64976fda7501bae20dfa9af151b12
pdf-font-stream PDF embedded font (sfnt) at offset 0xE2CF 5380 bytes
font_01_sfnt_off0000f525.bin
38c178542e72cdb566918527e8506492ab52edbe7be5d5f4cc24820bbd7d8d3f
pdf-font-stream PDF embedded font (sfnt) at offset 0xF525 11184 bytes
font_02_sfnt_off00011ac4.bin
80c93b5d844a45ceb4ab75a5bcac844f8506fdfad005e4a17f61be1b9e336595
pdf-font-stream PDF embedded font (sfnt) at offset 0x11AC4 20172 bytes