Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f23f63da82b5445…

MALICIOUS

PDF

35.2 KB Created: 2021-07-01 14:11:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 52c0a19f8ee032cf97f125ff6ca9783d SHA-1: d3e8da63b88d8e3292e4fa2cf8edcb594d3db929 SHA-256: 2f23f63da82b54458a06e72489badbb3e9900087f58a42e9fddf3a198d31c574
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/free-roblox-hack-tool-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/free-robux-2021-android_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-tips_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-prison-life-20-hack-download_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/roblox-hack-2021-get-free-robux-for-android-and-ios_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-reward-link-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/codes-for-free-sp-in-ice-cream-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/is-coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-net-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-1-robux-free_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-stop-someone-hacked-hacking-your-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/easy-way-to-get-robux_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
stream_002_off0000302c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x302C 23544 bytes
SHA-256: 101a6d3f6b4d2b713cf638e9aa8c23f5aae4f089765fdd756c279d110bebe6f8
font_01_sfnt_off00006576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6576 18820 bytes
SHA-256: ce0aa4a3ce81943e44ca0efe0d8286f2eb88d1de6b4b6f98a505399259393202

Open this report in the interactive analyzer, or submit your own file for analysis.