Malicious PDF — malware analysis report

Static analysis result for SHA-256 94090936170ea512…

MALICIOUS

PDF

47.2 KB Created: 2021-06-04 04:08:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bf7f72c46a3c8d4d401575344447d42c SHA-1: 3894e4d1cc347d3439683bfc54cc25d4816f01ae SHA-256: 94090936170ea5124acfb7082a1eb3e99db0726faaf0ca5c604e4da924484ca2
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 0.9769

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/431946152/roblox-fun-com-free-robux-game-hack PDF link annotation
    • http://library.gkigadingserpong.org/repository/free-tiktok-followers-instantly_GM835599320.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-exchange-40-free-spins_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-free-spin_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/mcpe-master-hack-unlimited-coins-latest-version_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/is-there-a-free-version-of-minecraft_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-roblox-app_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/what-games-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-tiktok-followers-for-free_GM835599320.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-spins-coin-master-hack-2021_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
font_00_sfnt_off00004fa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FA5 26164 bytes
SHA-256: 4d0e30b40e7de14b0f62307ff00f9139dfe1ccd6796219b759a2db80a4241b16
font_01_sfnt_off00008c11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C11 2828 bytes
SHA-256: a4e15770ab3b920ccbab17816ac2be280610f3f789d7654b00721cdcc5d65b79
font_02_sfnt_off000095c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95C5 18348 bytes
SHA-256: 9560f0e6f9a4e6be006083e3696e79311a38bb173f302534750988b281bae61f

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