Malicious PDF — malware analysis report

Static analysis result for SHA-256 f9d06145ece7ade5…

MALICIOUS

PDF

36.1 KB Created: 2021-06-27 17:00:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: e53660ec23156bdaf834eda53e579d44 SHA-1: 20c49557a96dbe82079cc862a3c0df1ca2d05672 SHA-256: f9d06145ece7ade55acb1f8d2a45dccd7bb1ec338c4605458709584c2ba5bf4d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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/free-robux-and-tickets-generator-2021-distorak-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id/repository/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/denis-daily-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/aplicaciones-de-hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/legit-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/minecraft-education-free_GM479516143.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/daily-coin-master-free-spin-link-facebook_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-do-u-undo-someone-hacking-ur-roblox-acc_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-do-you-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/cape-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-royalty-free-music_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/how-do-i-get-free-spins-on-coin-master_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_off00003165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3165 23096 bytes
SHA-256: 30d6d8e7a13769629a1a1e0ba8d29b7199b2273b0db1b667c7c3253e1f08eb60
font_01_sfnt_off0000657b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x657B 19856 bytes
SHA-256: a373574f4772d2dc5a41e2199507052603f95559471267b264aa2e5b281051a0

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