Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee3a0e53da95944b…

MALICIOUS

PDF

33.7 KB Created: 2021-07-06 06:04:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e7b63e0d2bf0bae053c0979d4f0d9a14 SHA-1: 2bab5d60edf25f52a07128a1036551db1ada3289 SHA-256: ee3a0e53da95944b3df4cd64da6b1eaed0908713f473a7ab1c84c269126264be
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 http://netcdn.tw/app/479516143/minecraft-112-2-hacked-client-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/roblox-free-catalog-items-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-inf-jump-in-roblox-no-hack_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-hack-client-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/a-free-game-called-roblox_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/como-conseguir-el-egg-hunt-de-hacker-roblox-el-egglicht_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-play-roblox-login-online_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-hack-into-other-peoples-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-how-to-get-free-skins_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/fps-hacks-roblox-aimbot-not-pf-v20_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/project-alpha20-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-apk-free-download_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
font_00_sfnt_off0000312b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x312B 21596 bytes
SHA-256: 0d53f47514137b9e82443cdc7431715f94a1db037504490d8dcf645c4167bbc0
font_01_sfnt_off00006075.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6075 18504 bytes
SHA-256: 1c6239c4e7240bb93b61e959f2b21d4e00e02324577494d7f11381c67a244304

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