Malicious PDF — malware analysis report

Static analysis result for SHA-256 c677c60dd0a6ef7d…

MALICIOUS

PDF

41.9 KB Created: 2021-05-17 06:18:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 448d63d4ac09e4a205a45a4419d40de1 SHA-1: 64ec411a009a2efe8ad31766f7a606ea2d6a600f SHA-256: c677c60dd0a6ef7d207feecd90261cdec4279e2d35e032e98e5e526a671f049e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to a suspicious domain, masquerading as a game hack generator. The ML classifier strongly flagged this PDF as malicious. The presence of embedded URLs and the lure of free game currency indicate a phishing or malware distribution attempt, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/mcpe-master-hack-unlimited-coins-game-hack PDF link annotation
    • http://kids-academy.pl/images/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://kids-academy.pl/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://kids-academy.pl/images/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://kids-academy.pl/images/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://kids-academy.pl/images/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://kids-academy.pl/images/coin-master-daily-free-link_GM406889139.pdfIn PDF document text
    • http://kids-academy.pl/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://kids-academy.pl/images/robux-get-com_GM431946152.pdfIn PDF document text
    • http://kids-academy.pl/images/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://kids-academy.pl/images/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • http://kids-academy.pl/images/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://kids-academy.pl/images/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://kids-academy.pl/images/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://kids-academy.pl/images/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://kids-academy.pl/images/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • http://kids-academy.pl/images/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://kids-academy.pl/images/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://kids-academy.pl/images/roblox-free-rubox_GM431946152.pdfIn PDF document text
    • http://kids-academy.pl/images/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://kids-academy.pl/images/how-do-you-get-free-robux-without-paying_GM431946152.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
stream_003_off00004759.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4759 24828 bytes
SHA-256: ef2aa167b447c0783f681204de754330fb988625007467402abfa11d7e6790c0
font_01_sfnt_off000080b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B2 18584 bytes
SHA-256: 94a5fa9ea55ff4f51f569b1e7641e26def780e7162514374e6dec8afa327d177

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