Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f3692ea8bda0c0a…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 08:43:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 84059cdb0d3f6bf21a085d32d3ad4c46 SHA-1: b001d9332c65f1e127b6d0e2ae6e87e9325069d5 SHA-256: 2f3692ea8bda0c0a2675f45ff0369ba2d57502c8b98319a36657ac1a43838205
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9865

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.online/app/431946152/how-do-you-get-free-robux-game-hack PDF link annotation
    • http://lib.smklabor.sch.id/repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-apps-that-actually-work-quick-download_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-change-your-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/como-hackear-coin-master-sin-verificacion-humana_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://lib.smklabor.sch.id/repository/apk-hack-coin-master_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_004_off000051a4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51A4 25132 bytes
SHA-256: 150896895354e1afc61711597cbd60e9077810f33ab6c354fd3d862bf16a495f
font_01_sfnt_off00008c12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C12 18612 bytes
SHA-256: 37b0398febc23a1417b5642eaebf6c5e0b941c8fdaeae9a9e3ba89062b3e12f9

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