Malicious PDF — malware analysis report

Static analysis result for SHA-256 a400d7a707617041…

MALICIOUS

PDF

34.1 KB Created: 2021-06-29 01:20:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fd04c5029a009f880206384c182a348e SHA-1: 5de6b4b06ff9d51f643625f4ee6881aeeb46311a SHA-256: a400d7a707617041c3d3ebd922b85ebe29fa962feb0c7b2960cb2588b420ddba
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.co/app/431946152/how-i-hack-roblox-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/roblox-hack-injector_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/cross-site-scripting-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-accsesoiri-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-without-verificaton_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-jump-hacks-for-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-jailbreak-hack-unjailbreak-script_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-coin-master-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-do-u-get-free-robux_GM431946152.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_off00002f42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F42 22296 bytes
SHA-256: aabde9fe9ae518f41756744b4b483fc7e0a9d482a67cc1c0d0c5983dc3d57f0b
font_01_sfnt_off000060bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BF 18820 bytes
SHA-256: 78d67e502dd819621830b76b49f2b0b3506ceb6a74cf2164ef35a85e299d3852

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