Malicious PDF — malware analysis report

Static analysis result for SHA-256 b87e5e1e615851ac…

MALICIOUS

PDF

47.5 KB Created: 2021-05-12 17:02:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f7b77620cea20773b8ae71640c33b8dc SHA-1: f5a95dccb98f169bb46a276d733e211f4bdb69b0 SHA-256: b87e5e1e615851ac4bbfa066ba304bee58ce74478f756e555ac4feaaff199ef9
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 0.9013

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/479516143/minecraft-hack-mod-game-hack PDF link annotation
    • http://parsbaft.com/images/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-hack-coin-master-apple_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/150-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-hack-coin-master-ios-no-jailbreak_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/minecraft-free-school_GM479516143.pdfIn PDF document text
    • http://parsbaft.com/images/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/how-do-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/cool-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://parsbaft.com/images/robux-robux_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-hack-to-get-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
stream_003_off000049ab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49AB 30752 bytes
SHA-256: d6c92ed01a90ae45df881fe1abf5354474d2472830b212243fbf6f30ad8998fa
font_01_sfnt_off00008df7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF7 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00009806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9806 18056 bytes
SHA-256: c98163390533840513273057c02ab8b0002c23ddfc36b9b9583c7d176bc18763

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