Malicious PDF — malware analysis report

Static analysis result for SHA-256 37df3b288dd1927b…

MALICIOUS

PDF

87.7 KB Created: 2021-03-24 07:30:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: f91cc20746a5114d533a56439671cd5b SHA-1: 477a101537888313f82649859e909ca8e408c4fd SHA-256: 37df3b288dd1927bf1b82eb1ac6c1233b6c0289efa6ca3f0f0ef74de91d7fd05
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body, though heavily obfuscated, contains references to 'ffxiv hud layout download', suggesting a lure to trick users into downloading further content. The presence of numerous external URLs, many hosted on disposable domains, further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://golowaki.ru/wix?keyword=ffxiv+hud+layout+download PDF link annotation
    • https://cdn.sqhk.co/xoxapivasif/hHhhJed/pejaxoxoduwizejabig.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/9cfsrZj/zivek.pdfIn PDF document text
    • https://cdn.sqhk.co/tajiwikiter/eT2jdhc/tennessee_titans_schedule_2020_home_games.pdfIn PDF document text
    • http://pristav.pro/dizawirugitomufideje87g97.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/BgfBgji/jidetur.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/example_of_feminist_criticism_storyktmjr.pdfIn PDF document text
    • http://newyearshop.site/kidugaburora8hauk.pdfIn PDF document text
    • http://getsalle.xyz/fishman_loudbox_performer_180w_review4h5y7.pdfIn PDF document text
    • https://cdn.sqhk.co/perajomipe/ifihcah/download_tony_hawk_skate_jam_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/T7ANfDO/32085181038.pdfIn PDF document text
    • http://moxawunanenubop.sportsontheweb.net/vifaxub.pdfIn PDF document text
    • http://wiboratiraveguw.mygamesonline.org/btec_national_health_and_social_care_revision_guide.pdfIn PDF document text
    • https://cdn.sqhk.co/towevefizub/c8ahbwm/top_100_djs_2020_ranking.pdfIn PDF document text
    • https://cdn.sqhk.co/zaviresodew/jfOhgid/15376980532.pdfIn PDF document text
    • http://punavuvipufov.sportsontheweb.net/inkscape_svg_font_editor_tutorial.pdfIn PDF document text
    • https://cdn.sqhk.co/tedalome/hc9rjl2/tubi_free_movies_and_tv_shows.pdfIn PDF document text
    • http://tajuliwelofiti.medianewsonline.com/mapamundi_con_division_politica_con_nombres_para_imprimir.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
    • http://jadivepijuga.myartsonline.com/solid_converter_to_word_online.pdfIn PDF document text
    • http://sajoveguduv.onlinewebshop.net/defense_lawyers_okc_ok.pdfIn PDF document text
    • https://s3.amazonaws.com/ximupuv/the_exorcist_series_cast.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/75515631945.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f3ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AB 4760 bytes
SHA-256: 8bc4e2f5dca8bd126bf63cee4f2297ab03cadbb459d359545719d426ebb003a4
font_01_sfnt_off000103e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103E8 11848 bytes
SHA-256: e65ca2e3374d34b721b0a7f5e93474043d1eab7a7a1f37ca3dace30e9419c059
font_02_sfnt_off00012c58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12C58 16220 bytes
SHA-256: 435a45b4216c63110d6d6441e21ec8938b601e7c78bc0f9a6dde53b46cb1225e
font_03_sfnt_off0001419a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1419A 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378