Malicious PDF — malware analysis report

Static analysis result for SHA-256 5193e03debb5e5b1…

MALICIOUS

PDF

33.6 KB Created: 2021-07-03 17:47:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 7fb7792b454f821ba385bc341292cc73 SHA-1: eb462b36d81699b0e16890a9dd4743a113d2718b SHA-256: 5193e03debb5e5b1a7ea1e7403fd9d96b61947e681133376857e1a0e80d25825
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 0.9824

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/free-robux-apps-that-work-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/robux-free-ohne-handynummer_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-code-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-account_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/whats-the-best-aimbot-hack-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/robux-generator-com_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/robux-free-kein-online-konto_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/hacks-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-levels-dragon-ball-z-revalations-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-no-virus_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/h2-account-stealing-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/hacking-into-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-in-the-grand-crossing-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/earn-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_off00002ab9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AB9 22524 bytes
SHA-256: 8d0e1f979af55e5047ce08fc0c482f2d97ff57db3a7bfa69cfe3aa8dfd17da1a
font_01_sfnt_off00005d05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D05 19528 bytes
SHA-256: 3ce59685ce564c47d51d5d1714b73889d1d344349ceb90d9e3a1730e11095f67

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