PDF static analysis report

Static analysis result for SHA-256 c4bc507c9f37b38d…

SUSPICIOUS

PDF

34.1 KB Created: 2021-07-04 02:58:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 27fde1893a807c98346780a2063c3e6c SHA-1: 4f11f7321ad5e995d8d157a29ef3bfb2d9a6473a SHA-256: c4bc507c9f37b38db095d7072caaa1853cd6bd1b30eb17f7d851ddcd04541c1c
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a prominent external URI pointing to sites offering game hacks and cheats. The ML classifier strongly flagged this PDF as malicious, and the presence of download-related lures reinforces the malicious intent. The document likely serves as a lure to download a second-stage payload, potentially involving JavaScript execution.

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.tw/app/406889139/coin-master-hack-ios-reddit-game-hack PDF link annotation
    • http://htbrasil.net/ckfinder/userfiles/files/how-to-hack-roblox-accounts-with-edit-this-cookie-2021_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/free-roblox-noob-gameplay_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/free-roblox-games-that-you-dont-have-to-sign-in_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/how-to-get-any-item-for-free-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/how-to-sue-roblox_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/hacking-giving-my-fans-robux-inquisitor_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/roblox-surf-hack-script_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/robux-gratis-funciona-hack-sin-cortes-2021_GM431946152.pdfIn PDF document text
    • http://htbrasil.net/ckfinder/userfiles/files/free-minecraft-skins-java_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
stream_002_off00002f3a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F3A 22872 bytes
SHA-256: 779b1ccf8a6621d8d612b52c6b0667cfe10540b04a29d01babb637ef126c3e78
font_01_sfnt_off000062aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AA 18180 bytes
SHA-256: 36a5529bcec1a9ebfeb67e8a1c9eb6b6afb40cca80507846db0d415d086f7376

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