Malicious PDF — malware analysis report

Static analysis result for SHA-256 59ce46fc47a3b542…

MALICIOUS

PDF

49.3 KB Created: 2021-05-14 03:52:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 661e52d067b44c5dfb55f54057fd6b99 SHA-1: 559e624ea5e34e0b1bf5ab8e51600a0e527552b8 SHA-256: 59ce46fc47a3b542ce62f6c46c0983c6a70e3f7601b993c22f81a44582d905d3
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or human verification prompt to trick the user into clicking a link, which is a common social engineering tactic. The embedded URL and multiple other URLs point to sites offering game-related cheats or hacks, suggesting a lure for downloading potentially malicious content. While no scripts were directly extracted, the PDF structure and heuristics indicate it's designed to lead the user to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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 https://netcdn.xyz/app/431946152/how-to-get-roebucks-on-roblox-game-hack
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-2021_GM431946152.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/coin-master-spin-hack_GM406889139.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/minecraft-java-free-download_GM479516143.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/grabpoints-robux_GM431946152.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/minecraft-ps3-free-download_GM479516143.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/hack-coin-master-with-lucky-patcher_GM406889139.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-spin-link_GM406889139.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/get-free-spins-coin-master_GM406889139.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-coin-and-spin-in-coin-master_GM406889139.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/roblox-hack-download_GM431946152.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification-code_GM406889139.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-spins-coin-master-ios-2021_GM406889139.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-using-es-filer_GM406889139.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/roblox-free-clothes-girl_GM431946152.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/ways-to-get-free-robux-2021_GM431946152.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/coin-master-free-spin-ml_GM406889139.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/coin-master-hack-mod-apk-android-1_GM406889139.pdf
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/rblx-city-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c9f.bin
45ebf411603ae85c9498cdafe81c3aabbc054ed4350519fe06a6a60d3e8de314		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C9F 37700 bytes
font_01_sfnt_off00009e92.bin
2b946b4d7a1998aebf51f19e9cbc0e13d461cd82a275ed989f3ac0cfcc0a4974		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E92 18364 bytes

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