Malicious PDF — malware analysis report

Static analysis result for SHA-256 d44694ef66a42c29…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 00:46:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d4a1ed25dc17db96d1a856d8c3a491f6 SHA-1: 95977d4b9ed6daf5be410fe6196c0021ff4e54e2 SHA-256: d44694ef66a42c29d7a99824ca5fc488621264d4c3a1b8dfb073fae1f7b96078
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.tw/app/431946152/how-to-hack-someones-account-on-roblox-game-hack PDF link annotation
    • http://katalog.gemalibrary.net/repository/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-jailbreak-hack-gameplay_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-hack-roblox-games_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-no-scam-or-survey-or-hack_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-l-robux-2021-obby_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/coin-master-free-spins-link-2021-blogger_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/tiktok-for-free-movies_GM835599320.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/tiktok-free-photo_GM835599320.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_off000030aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30AA 22512 bytes
SHA-256: fb1e5a1e8723faa901f5ade85d91e173e88f31f3c47903fbfe8dbef14afaad7b
font_01_sfnt_off000062fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FC 19324 bytes
SHA-256: 28ba82939c936f9b01a7caeed75c50b5986faeea817d1276e3bf1f7a5f42653e

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