Malicious PDF — malware analysis report

Static analysis result for SHA-256 50a34a4e2f04f5ec…

MALICIOUS

PDF

33.7 KB Created: 2021-07-05 14:17:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d89df4586cc1fc9eab3871aa10208861 SHA-1: 0dc69f06d0c70df0f8dd496eea8fb9e3bd7e7fba SHA-256: 50a34a4e2f04f5ec870be85e636d843e09177da7f07b446422c9dbf4a68355c0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that are designed as lures for game hacks and free account generators. The primary URL, http://netcdn.tw/app/835599320/tiktok-free-account-game-hack, is flagged as a high-risk redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further malware delivery.

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/835599320/tiktok-free-account-game-hack PDF link annotation
    • http://pustaka.smpmuh2yk.sch.id/repository/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/robux-win_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/roblox-admin-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/free-roblox-accounts-working-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/how-to-get-free-robux-that-works_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/games-like-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/how-do-you-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/tiktok-free-50-likes_GM835599320.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/roblox-cheat-engine-fly-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id//repository/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.smpmuh2yk.sch.id/repository/best-way-to-get-robux_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_off0000316b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316B 21820 bytes
SHA-256: 3ab152a3d83eee24b746ea3421f27894bb178ba4ae46565b94742b384b7d3b56
font_01_sfnt_off00006189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6189 18112 bytes
SHA-256: ca8d36865a97e26878f1ad2681fe9a10d010a426edbd502935dab7d80505beaf

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