Malicious PDF — malware analysis report

Static analysis result for SHA-256 25b16efcf1bf802f…

MALICIOUS

PDF

47.8 KB Created: 2021-05-19 03:03:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d5fc893158de8c1665c2c37f44ce02e5 SHA-1: 97e201cae22cbda96e1d0e6452e0b0b97d6003b1 SHA-256: 25b16efcf1bf802f522fd55b2aa978e2a7845221e7a0fb2f7bbc5c2265dbab23
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains a lure related to game hacks and free tokens, directing users to a URL that likely hosts a malicious payload. The ML classifier also flagged this PDF as malicious. The presence of embedded URLs and the nature of the lure suggest a phishing or social engineering attack aimed at tricking users into downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8715

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/how-to-get-free-tokens-in-minecraft-ps4-game-hack PDF link annotation
    • http://digilib.unla.ac.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-jackpot-hack_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-skin-free_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/win-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/blox-best-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-hack-without-verification-2021_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/wwwcoin-master-hack-game-download_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/how-to-get-to-village-3-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/rbx-hut_GM431946152.pdfIn PDF document text
    • http://digilib.unla.ac.id/repository/coin-master-free-spin-link-new_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b51.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B51 24856 bytes
SHA-256: a5364b61caa3c7d952f660be0347358a2fb13d42d2d00d69ffc0c1758ad858e4
font_01_sfnt_off000083c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C7 3020 bytes
SHA-256: f1a29adcea636583330be8db4f6466410de551ac48576b9e1aa5c34e2d665a1f
font_02_sfnt_off00008e1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E1B 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_03_sfnt_off0000982b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x982B 18260 bytes
SHA-256: 6b17d904edba380b1c0a1521f110ced755ab41ddc916bfb976523684f5146024

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