Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee09b53225553d1b…

MALICIOUS

PDF

47.8 KB Created: 2021-06-03 05:30:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bdc2ca248b5d9df33946164594873126 SHA-1: 4d2ebcd9b876012cf94bef2958d9e28b0d8821d8 SHA-256: ee09b53225553d1b56677e31766ddf0d1385618c5c4ae6e9e554807eae0a7dde
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a fake-CAPTCHA lure. 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 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/nuevo-hack-roblox-game-hack PDF link annotation
    • https://www.legclub.org/uploads/files/files/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/get-roebucks-com_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/wurst-client-112-2_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-get-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/roblox-hax_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/instant-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052bf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52BF 24692 bytes
SHA-256: 00a55ed3fd0446cb4a40c394a21264203b7cbc2c8932e350e91762d5e348591e
font_01_sfnt_off00008af9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF9 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off000097a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97A1 18436 bytes
SHA-256: fa299c83c2ef050cf1ce0e31399d823e3daab0c068b41063b463d2dfd7129f70

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