Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a33730932e1cc54…

MALICIOUS

PDF

35.9 KB Created: 2021-07-08 14:44:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 912dd2ad66af6825710d4c24da1d6385 SHA-1: 6dc29c8028ec1e7d7b9407b0be43646635022d0a SHA-256: 2a33730932e1cc549a8712eb5cfb0a24fa125d0a88c5f627a5f8db9b24c1ded5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically for 'Coin Master Tricks', and redirects to the URL http://netcdn.tw/app/406889139/coin-master-tricks-game-hack. This URL is flagged as malicious and likely serves as a distribution point for malware. The document's content and the embedded URI strongly suggest a phishing or social engineering attack aimed at tricking users into visiting a malicious site.

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/406889139/coin-master-tricks-game-hack PDF link annotation
    • http://www.stttekstil.ac.id/elib/repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-hacks-for-imac_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/descargar-roblox-mod-hack_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-account-roblox-with-robux_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-2021-no-human-verification-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-game-scripts-pastebin-free-gamepass_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-afk-saber-simulator-hack_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/ex-7-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/free-robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/earn-free-robux-now_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/exploit-hack-roblox-free-download_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/hacks-for-roblox-2021-june_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-to-hack-roblox-and-get-infinite-health_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-jailbreak-key-card-hack_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/roblox-cheat-indetectable_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdfIn PDF document text
    • http://www.stttekstil.ac.id/elib/repository/coin-master-hack-version-2021-free-download_GM406889139.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
stream_002_off00003370.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3370 24280 bytes
SHA-256: 9ba0ee71d88c956539a65fcd04f3d7c9dd814c580b14d71ce1a3d072ec0e1d1e
font_01_sfnt_off00006aa7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AA7 18004 bytes
SHA-256: 567f2d2b3d77c3359d1be486e2dead60d59299be3087a8c66e941a03120e0c5c

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