Malicious PDF — malware analysis report

Static analysis result for SHA-256 896f2c50da429107…

MALICIOUS

PDF

34.3 KB Created: 2021-06-29 03:57:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 642be5abda925d99870cfc91fd45d00c SHA-1: 1322b2225e1ec81d2bf58adf9b9d18f117e8c99e SHA-256: 896f2c50da429107dab24507bc93b0df7e4c8ef9e814a8263891e6a614f3e410
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/roblox-ios-hack-no-jailbreak-game-hack PDF link annotation
    • http://pustaka-smpn3tpi.com/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/free-robux-place_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/minecraft-free-download-mac_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-mojang-account-with-minecraft_GM479516143.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/csgo-hack-script-roblox-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/robux-hacks-actually-works_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-private-server-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-catalog-free-items-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-free-items-in-catalog-2021_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-murder-mystery-2-cheat-engine_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com//repository/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-skeptic-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/joshy-roblox-hack-virus_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/roblox-gamepass-hack_GM431946152.pdfIn PDF document text
    • http://pustaka-smpn3tpi.com/repository/free-robux-that-actually-works_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_off00002ec1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EC1 22544 bytes
SHA-256: 26dfbeceb32d1edf8db766008f03f71fd22d943c3b113d7d0378ec596dad6e53
font_01_sfnt_off00006128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6128 18944 bytes
SHA-256: e1851de9a3e64c305da27ff1eea8c57c43b30f52ae5ebce41154dc25ebd019e2

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