Malicious PDF — malware analysis report

Static analysis result for SHA-256 8abd0b31b737665b…

MALICIOUS

PDF

80.4 KB Created: 2021-03-12 16:07:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9a2e5d99927164a880a873779ba6d979 SHA-1: 918eb33516d903df934d2d1d9933687f22e76e66 SHA-256: 8abd0b31b737665ba422827068637ce46f45ee081f4724a9891f0a8921b3edc3
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. Heuristics indicate the presence of external URIs and a ML classifier flagged it as malicious. ClamAV also detected it as a phishing trojan. The document body, though heavily obfuscated, appears to reference 'Top tom clancy games ps4', suggesting a lure to attract users to 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://xezojetit.ru/strik?utm_term=top+tom+clancy+games+ps4
    • http://lnstagram-helping.live/autodesk_3ds_max_2010_crack_freekl9ab.pdf
    • http://matteset-spon.space/electron_js_template_enginen8dgd.pdf
    • http://klossheff.xyz/84581742290u7fd2.pdf
    • http://wojurimaxab.mywebcommunity.org/arteritis_de_celulas_gigantes_2020.pdf
    • https://cdn-cms.f-static.net/uploads/4480584/normal_60102b0b95678.pdf
    • http://uscovidcharts.com/xifelezigojivusivileru4t5l3.pdf
    • http://sberin.xyz/573821142935hmg5.pdf
    • http://onlinetyz.xyz/mejores_frases_del_libro_la_maestria_del_amorhb7jw.pdf
    • http://forisawidokomor.sportsontheweb.net/ielts_bar_chart_vocabulary.pdf
    • https://cdn-cms.f-static.net/uploads/4466391/normal_6026005785a60.pdf
    • https://cdn-cms.f-static.net/uploads/4427293/normal_600dcdad085bf.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/rimepusox/35452038911.pdf
    • https://s3.amazonaws.com/jenagubadopi/90389898716.pdf
    • http://megigezorozo.atwebpages.com/glanzer_and_cunitz_procedure.pdf
    • https://s3.amazonaws.com/ragejufa/interpreting_political_cartoons_3_answer_key.pdf
    • https://s3.amazonaws.com/dojivewobasuval/35672713203.pdf
    • https://s3.amazonaws.com/bidurudilidujug/how_to_install_cantilever_deck_forms.pdf
    • https://s3.amazonaws.com/dazawojob/gatifafupuzi.pdf
    • https://s3.amazonaws.com/lovetijif/you_know_you_beautiful_song.pdf
    • https://s3.amazonaws.com/falevi/game_ps2_bloody_roar_3.pdf
    • https://s3.amazonaws.com/wavunot/conference_powerpoint_template.pdf
    • https://s3.amazonaws.com/lebejos/zepidetutemot.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ff7b.bin
3d66317af94f65846819ee387e3d78c9ef3320189eb17b61606dc36f90f506b3
pdf-font-stream PDF embedded font (sfnt) at offset 0xFF7B 5296 bytes
font_01_sfnt_off00011184.bin
38f06208b8a9d06b56a7b16e8f9f34dc02d0e67e36b431e9d2694a0bcc947279
pdf-font-stream PDF embedded font (sfnt) at offset 0x11184 10228 bytes