Malicious PDF — malware analysis report

Static analysis result for SHA-256 94a467f6d5372dd5…

MALICIOUS

PDF

44.0 KB Created: 2021-05-12 02:00:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f803b02361a4fd2f4553ba57c484359e SHA-1: e0b1ab3b178f09bb851ee26fb6b994118e02598d SHA-256: 94a467f6d5372dd5b3d4f0e38cb9a3e19bfb895eedad857b18c7fb171d26bd0d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to websites offering game hacks and free spins, a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URIs strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/coin-master-free-spins-daily-link-updated-game-hack PDF link annotation
    • http://www.myresidence.lu/userfiles/files/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/free-400-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/wurst-download_GM479516143.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/do-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/roblox-free-clothes-hack_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/i-robux_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.myresidence.lu/userfiles/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004551.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4551 24800 bytes
SHA-256: e7017b8df1cb191fcdd47ad7ea685b98e8539cc949681c71735c8f3ab43e9f37
font_01_sfnt_off00007dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DCB 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000087b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B6 18836 bytes
SHA-256: 483be81730c5d51d00079e0b96a35004c6f4ace92d0df16fea0b4a10a7a49318

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