Malicious PDF — malware analysis report

Static analysis result for SHA-256 904382418d5c694e…

MALICIOUS

PDF

48.3 KB Created: 2021-06-11 05:16:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ef24521c42b0f18dc7fc9bed98c2041c SHA-1: 8339970254629f429f8db5c9a056d257dac0f7f9 SHA-256: 904382418d5c694ea8ea18efc4107c4e2b43d191b32c0a8cbcaa1b10161d0d64
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 0.9796

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.tw/app/431946152/hack-de-dinero-en-jailbreak-roblox-2021-game-hack PDF link annotation
    • http://www.alrashed-alsaleh.com/userfiles/files/free-coins-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/scary-larry-roblox_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/roblox-cheat-code-dice-for-elemental-war_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/my-robux_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/pokemon-go-free-balls-2021_GM1094591345.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/roblox-font-free_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/2021-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/how-to-get-free-gamepasses-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.alrashed-alsaleh.com/userfiles/files/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51FB 26192 bytes
SHA-256: 96b56fe82635d7d056425b8f4d36b3aec241fef202cec3e7a1519a4b43d21257
font_01_sfnt_off00008d69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D69 2928 bytes
SHA-256: d27ca7269cc665f7c566dcba71d1fcbd1348614b7b6242da2500f0713fcbc8bc
font_02_sfnt_off00009788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9788 19040 bytes
SHA-256: e0831feb024ba7bf2a37f6ba3ad63f16a1770e2024a766b4166972844480a938

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