Malicious PDF — malware analysis report

Static analysis result for SHA-256 e172e9924cd2c6a8…

MALICIOUS

PDF

42.9 KB Created: 2021-05-16 23:37:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 965ff6be8d965d9188b1f799e015fc40 SHA-1: 4261124aa4028006073aa1a3d46874a5d3b1c244 SHA-256: e172e9924cd2c6a81819a476244f65ddf14952459f61e836230444b59af0d45f
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links designed to lure users into clicking on game hack generators and free currency offers, impersonating brands like Apple. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-daily-gift-free-spins-and-coins-game-hack, which likely serves as a redirector to further malicious content or phishing pages. The ML classifier strongly flagged this PDF as malicious, supporting the observed lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/406889139/coin-master-daily-gift-free-spins-and-coins-game-hack.
  • 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-daily-gift-free-spins-and-coins-game-hack PDF link annotation
    • http://italymania.ru/images/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://italymania.ru/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/apps-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://italymania.ru/images/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • http://italymania.ru/images/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/instantrobux_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://italymania.ru/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://italymania.ru/images/minecraft-xbox-one-code-free_GM479516143.pdfIn PDF document text
    • http://italymania.ru/images/coin-master-code-hack_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_off0000493e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x493E 26388 bytes
SHA-256: e505b99bc5a27c24eafd657c960947916637d26d7247c9766d0ddbe6091f928f
font_01_sfnt_off00008495.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8495 18480 bytes
SHA-256: 3ccd0e6e182247473c8fd8a661e1697f212027199d1cdaa086bf60c9e83bc44d

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