Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f5e194aab893e4…

MALICIOUS

PDF

44.4 KB Created: 2021-05-11 05:05:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d3e8d0023271395fce3e392cbe4284f7 SHA-1: ae5ce9a79c2526436d08fa956315ffcc8126d396 SHA-256: 98f5e194aab893e46fc41ef7c228da536929844b5ae0a4be70492b3180d545ef
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 0.9980

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/free-robux-for-kids-no-verification-game-hack PDF link annotation
    • http://keepcasscountybeautiful.com/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/easy-points-gg_GM431946152.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/coin-master-free-spins-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/free-coin-master-spins-link-download_GM406889139.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://keepcasscountybeautiful.com/images/master-coins-free_GM406889139.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_off00004b52.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B52 27304 bytes
SHA-256: c33324cd65e0e752d289f48d40bfb14ab610f54799c541f354f2ab165b4b4d03
font_01_sfnt_off00008987.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8987 18776 bytes
SHA-256: abcd165e4b695e85902e5e0162dd8c883b494cae8faf27dbfb1f0dc34095f980

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