Malicious PDF — malware analysis report

Static analysis result for SHA-256 a416e62cdd3463c4…

MALICIOUS

PDF

33.6 KB Created: 2021-07-04 21:28:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: cf1681eeed51f1ea4a12dc0071f2cd30 SHA-1: f6cca1e32d229cf0851ca2554d630d5ae4b8c082 SHA-256: a416e62cdd3463c40a50726306dd51b4cf04a933fd471e9ca59e589d12a96586
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and free in-game currency, such as Coin Master and Roblox. The primary lure directs users to 'netcdn.tw', which is flagged as a redirector for game hacks. This suggests the document is designed to trick users into visiting malicious sites that may host further malware or phishing content. No scripts were extracted, but the embedded URLs and the 'game hack' lure strongly indicate a malicious intent.

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-free-spins-and-coins-daily-links-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/pubg-uc-dark-web_GM1330123889.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-app-real_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/spin-and-coin_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/cheat-engine-fly-hack-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/hilton-hotel-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/hack-robux-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/generator-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-injector-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/robux-free-online_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-island-2-script-hack_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-cash-codes-for-roblox-miner-haven_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-download-roblox-for-kids-on-laptop_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-no-human-verification-2021_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D79 22156 bytes
SHA-256: 195bf60d0af6752186730bb2ee7b18e33b9a8ab8a7a4d41c263f82a3017e6aa4
font_01_sfnt_off00005e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E85 18940 bytes
SHA-256: c0dcd974f4fe980c6a922a1d67dca4592269afdacb350ab691b189b4ca5ba35f

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