Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d07007b698f14c4…

MALICIOUS

PDF

51.2 KB Created: 2021-06-03 07:54:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 93d20566d10f6b4cf144c1a6a1374210 SHA-1: 39852b289086a0fb16f2b81185a57a38d3204957 SHA-256: 6d07007b698f14c45ded8474467a360be70760229c900cccf2df2e340104f9e9
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 0.9713

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/old-roblox-accounts-for-free-game-hack PDF link annotation
    • http://www.library.gkigadingserpong.org/repository/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/can-i-hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-free-spins-link-31-march-2021_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/free-roblox-toy-codes_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coinmaster-hack_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-hack-coin-master-ios-2021_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/freerobux-hack-us_GM431946152.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.library.gkigadingserpong.org/repository/krnl-download_GM431946152.pdfIn PDF document text
    • http://library.gkigadingserpong.org/repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004f89.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F89 27272 bytes
SHA-256: 791499091d2c0a7b3fdf5ccc31608fa980bf027e40cdc94961111b2290c171f0
font_01_sfnt_off00008e0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E0D 2824 bytes
SHA-256: 1d0cb1023eaa225682b8e7a2c8df4e4c96545ba7eedaf3d9844e51183e9ca189
font_02_sfnt_off000097b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97B5 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off0000a4c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA4C6 18368 bytes
SHA-256: f0ce6b820c45e6e2988b5e2b6f1fd71f334d25f96e0178b7a1255a1417217111

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