Malicious PDF — malware analysis report

Static analysis result for SHA-256 ded907ca6e6023f2…

MALICIOUS

PDF

35.5 KB Created: 2021-07-05 07:12:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0861a232a43eea7d3ca309d21fe8ef0d SHA-1: f7aa45abbe2f05adbb709be4183de9ec4aac6f26 SHA-256: ded907ca6e6023f20caec9bd3ee56d1c7a865d3644b2be65c9900351dda7b572
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to sites offering game hacks and free in-game currency, a common lure for phishing or malware distribution. The ML classifier strongly flagged this PDF as malicious, and heuristics indicate it links to a game hack redirector. While no scripts were explicitly extracted, the PDF structure itself contains links that are likely intended to lead the user to a malicious payload or phishing page.

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/free-spins-and-coins-for-coin-master-game-hack PDF link annotation
    • http://atiltd.com.tw/upload/files/free-roblox-account-with-rpbux-password_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/coin-master-hacks-for-spins_GM406889139.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-glitches-roblox_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/free-robux-no-paying_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-use-someones-ip-on-roblox-to-hack_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/hack-on-roblox-to-not-die-in-obby_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/roblox-jailbreak-hack-how-to-through-wals-hack_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/buzz-the-bee-robux-hack_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/roblox-the-future-hack_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/roblox-free-injector_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-to-get-a-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/roblox-robux-hack-online-no-download_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://atiltd.com.tw/upload/files/is-roblox-free-on-pc_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_off00003448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3448 23080 bytes
SHA-256: 6acbeb12108ef9e52fba09feff8fbf98bbad2ca5b44d270ef428a1a6b0d89240
font_01_sfnt_off00006814.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6814 18348 bytes
SHA-256: e3514f5c13c59f74fe131b320bb4a7a21799b0fccf5b53c141d50f68870e844d

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