Malicious PDF — malware analysis report

Static analysis result for SHA-256 473827ca39d9c2dd…

MALICIOUS

PDF

41.7 KB Created: 2021-05-19 02:10:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 96411597bdb6c3c347f73a8cfbbc2070 SHA-1: 40706cad75345a81cc395e5af0cc002ce5f38606 SHA-256: 473827ca39d9c2dd6a2efb59e18941cce63b8ad5e38d7124b7612be2fb33a845
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 0.9971

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/835599320/what-tiktok-free-robux-game-hack PDF link annotation
    • http://www.teapotjewelry.com/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/rewards-roblox-com_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/coin-master-free-raid-link_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • http://www.teapotjewelry.com/images/minecraft-online-free-download_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_003_off00004795.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4795 24416 bytes
SHA-256: 916d39e659d0598e60677990a3cbe98cf579c5d2fcf335d39501690239e97069
font_01_sfnt_off00007fd6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD6 18556 bytes
SHA-256: a899af966bde86afa62c0763dcef5a0dabec384b50cb27dba19d1ff866466080

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