Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0a9b9307f171e69…

MALICIOUS

PDF

42.6 KB Created: 2021-05-14 18:34:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 8b9360ab6e1092cc6afe7ec36b247d75 SHA-1: 2c04bb75e503f6854fddcb9dbb07cd7bae60b008 SHA-256: c0a9b9307f171e698d97e2debcc872d6308208bd1441049479dc3d5c0ddb2e8d
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/431946152/roblox-but-game-hack PDF link annotation
    • http://jdlwealth.com/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/roblox-2021_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://jdlwealth.com/images/best-tricks-co-robux_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://jdlwealth.com/images/best-hack-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://jdlwealth.com/images/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://jdlwealth.com/images/roblox-free-robux-generator_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_off0000482b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x482B 25864 bytes
SHA-256: decdceabe77f31949c46ee88ce1030e7d7a74bb7671301142f701fe8eba6e326
font_01_sfnt_off000084bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84BD 18028 bytes
SHA-256: fce4ff27a020ad9ba149cc73b7458b992072ea6f25dbf5cf8584b9a1203412e3

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