Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ed10e024a536bd1…

MALICIOUS

PDF

34.2 KB Created: 2021-07-08 05:21:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 68ac89b4a62e6fd139e0e213bc493757 SHA-1: a79efaa9f2d5c517a4a336d3056d33fdc44d87aa SHA-256: 8ed10e024a536bd14f8ee6453c3af2f4dcd996d7fef2e92542f97e52d786deec
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/roblox-free-hair-boy-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/free-robux-real_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-admin-logo-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/fake-free-robux-place_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-someones-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-coin-master-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/i-need-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-points-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-roblox-on-android-with-lucky-patcher_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/drilling-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-hack-no-verification-ios_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-kohls-admin-house-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/reel-hack-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-in-roblox_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
font_00_sfnt_off0000300b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300B 22156 bytes
SHA-256: 18732334226419949f2e4076cf4b28b6a7ba10c2f3be615026a2a16fc7605bdd
font_01_sfnt_off000060fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60FA 18952 bytes
SHA-256: 68db533f68a5d85e0c0ba5aa1128411bd5b5e7a97d0d9a36c4d175df7193d229

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