PDF static analysis report

Static analysis result for SHA-256 8011f9a1ea0074fe…

SUSPICIOUS

PDF

34.3 KB Created: 2021-06-28 19:53:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b632f07768911279d18132c9a9b03056 SHA-1: bc33ba1c2c6ab0a76bb34254b5e1199320c1e23f SHA-256: 8011f9a1ea0074fee63478c602d46bfe1b438adbc81c72cada7553c5273e2d68
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple embedded URLs and a heuristic firing for an external URI, all related to obtaining free in-game currency for games like Roblox and Coin Master. The ML classifier strongly flagged this PDF as malicious, indicating it likely serves as a lure to download a second-stage payload. The presence of download-related text further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 3

  • 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.co/app/431946152/free-roblox-for-roblox-2021-game-hack PDF link annotation
    • https://cleansui.com.tw/image/data/files/how-to-get-free-robux-in-roblox-pc-2021_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-robux-no-downloads-no-surveys_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/coin-master-hack-tool-2021_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/coin-master-bonus_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/free-robux-alex_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/hack-for-apocalips-rising-roblox_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/guess-the-character-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • https://cleansui.com.tw/image/data/files/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://cleansui.com.tw/image/data/files/minecraft-for-laptop-free_GM479516143.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_off000030a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30A5 21832 bytes
SHA-256: 7a42769251f7ced1ab9d9991c9e9d90724ec9fa1da154c7d7d0a8d8777605d79
font_01_sfnt_off000060ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60EA 19052 bytes
SHA-256: f6df5e0d93465dee71f41ac3731c375a03a441964b87212df86cea4bed251236

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