Malicious PDF — malware analysis report

Static analysis result for SHA-256 727d93a5aa356b9b…

MALICIOUS

PDF

35.5 KB Created: 2021-07-10 00:44:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4266b87bce31413b1e06754b32b2d3a9 SHA-1: c38ec2648c8aa5468bfe72d21195f5e4c7236cdc SHA-256: 727d93a5aa356b9b88958a05c2c1ab8e4e7ddef1e29d4e62e7dc15b68df4c366
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are designed to lure users into clicking on them by promising free in-game currency or hacks. The primary link, http://netcdn.tw/app/406889139/coin-master-free-spins-and-coins-without-human-verification-game-hack, is flagged as a game hack redirector. This suggests the document's purpose is to direct users to potentially malicious websites that may host scams or facilitate malware downloads.

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-without-human-verification-game-hack PDF link annotation
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/coin-master-card-link-free_GM406889139.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/roblox-hunger-games-hack_GM431946152.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/como-tener-robux-sin-hacks-y-sin-pagar_GM431946152.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/roblox-royale-high-for-free_GM431946152.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/free-things-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/hacking-jakes-account-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/veil-roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/how-to-get-a-free-item-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/el-mejor-hack-de-roblox_GM431946152.pdfIn PDF document text
    • http://www.highsecuritykwt.com/uploaded_files/userfiles/files/roblox-free-robux-no-human-verification_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_off00003248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3248 22788 bytes
SHA-256: 371c557c230e6dc92a961c6e02da1bc7a2cdf6b4b846f1c11db687b6dea0a973
font_01_sfnt_off00006565.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6565 19248 bytes
SHA-256: d09787106218742ca695bada48859e01aee6b927acc2a42c1706bc817617cd1f

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