Malicious PDF — malware analysis report

Static analysis result for SHA-256 65966b0b76df292f…

MALICIOUS

PDF

48.8 KB Created: 2021-06-03 23:31:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8a0479a8993ea77caf956bc10f935d91 SHA-1: c8c60af752c3b3250da675cb7ed2ae43e1daa773 SHA-256: 65966b0b76df292f243022e5befc7176a06a5b2383b3937772dc71f9fa66ebdc
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.online/app/479516143/how-to-get-minecraft-dungeons-for-free-game-hack PDF link annotation
    • http://lib.baruna-husada.ac.id/repository/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/synapse-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/earn-robux-now_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/how-to-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/pokemon-go-free-bot_GM1094591345.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/coin-master-32-mod-hack-unlimited_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/best-hack-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/free-spins-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/free-spin-coin-master-new-link_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/roblox-imagine_GM431946152.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id//repository/coin-master-free-100-spin_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • http://lib.baruna-husada.ac.id/repository/rare-free-links-to-coin-master_GM406889139.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_004_off00005331.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5331 28696 bytes
SHA-256: 05511ed45817e54ab4449f403dbbc0a97614848063de6c919c5ed37930ef3bd6
font_01_sfnt_off000091f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91F2 2820 bytes
SHA-256: 34dd21cbcbbf8680f9624d5ddfa25e49232e6768200f74ddacb5347fd7a5f6dc
font_02_sfnt_off00009b93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B93 18472 bytes
SHA-256: 65ee82f26cafa7906902f4dbf8f4098f0781a130d3f16ad2d63d9ccc83542dd0

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