Malicious PDF — malware analysis report

Static analysis result for SHA-256 e372d3702a2b6954…

MALICIOUS

PDF

34.1 KB Created: 2021-06-26 16:16:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: aaaa8c84d673dac9b57689fdb7f9df3c SHA-1: db26ed44c236f1cae3034c073f023a39f9cb38da SHA-256: e372d3702a2b695491552eecd8028bc972127f5bcffbab90ad127698d96ad3bc
82 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://netcdn.co/app/431946152/obbys-august-2021-free-robux-game-hack PDF link annotation
    • http://library.yamasi.ac.id/repository/haktuts-coin-master-today_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/robux-hack-working-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-free-lvl-7-script-executor-2021-august-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/robux-earner_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/10-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-fast-card-codes-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-often-pubg-uc-flare-up_GM1330123889.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-no-survey-mobile_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/pokemon-go-basic-vs-premium-rewards_GM1094591345.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/javascript-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hack-ma-pin-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hacks-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5A 22636 bytes
SHA-256: ae7c4a5dfef6e4a2b6fe7f025b6a3a526684f6d4a6528c83529153bfa6a86d7c
font_01_sfnt_off00005f09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F09 19400 bytes
SHA-256: 50b46db3275a51809db81ed1b6d4a4b0f49839687f233505f4efd3dc622054e0

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