Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a6cea635fdd9450…

MALICIOUS

PDF

45.9 KB Created: 2021-06-10 22:36:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 906de7d0e2cac35dbecd5ed867342904 SHA-1: f988f1d173bf58d27d289b5586957d95c1ab5d4a SHA-256: 6a6cea635fdd9450bb9aecd8de6c19938bcaecb3009151e720c583ec91472dab
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and game hacks, directing users to a malicious URL. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristics indicate a redirection to a potentially harmful site. The ML classifier also flagged this PDF as malicious, supporting the assessment of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/bux-life-free-robux-codes-game-hack PDF link annotation
    • http://pdapanache.com/images/free-robux-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://pdapanache.com/images/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://pdapanache.com/images/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/offers-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pdapanache.com/images/free-robux-script_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/ghost-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/roblox-hack-client-free_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/roblox-robux-hack-february-2021_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • http://pdapanache.com/images/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://pdapanache.com/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pdapanache.com/images/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • http://pdapanache.com/images/how-to-get-free-stuff-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pdapanache.com/images/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/free-robux-that-works-2021_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/get-free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://pdapanache.com/images/free-minecraft-alt-accounts_GM479516143.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_004_off00004fd9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FD9 29224 bytes
SHA-256: 37c64c0231f5511ec947d790d4556e3ffe71afed996c407e4f75eed78fe8c9b4
font_01_sfnt_off000090d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90D5 18308 bytes
SHA-256: c77a55604d43a25f571d4e075bca12bc37a9a31db8025b3819b812c5f69ceca5

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