Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0dcf1741a8fab62…

MALICIOUS

PDF

45.8 KB Created: 2021-05-17 09:27:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 628a9eeb42461e87a6b104237f0aee56 SHA-1: c5316df759fe6faabfc62789b8bb7aab99418b84 SHA-256: d0dcf1741a8fab623e92325b07a2284d3e474945ddb9c2ced07052525e76af19
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The document body and heuristics indicate a lure for game hacking or cheats, presenting a fake CAPTCHA to trick users into downloading a payload. The ML classifier strongly flagged this PDF as malicious, and numerous URLs point to potentially malicious download sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/406889139/coin-master-hack-game-download-mod-apk-game-hack PDF link annotation
    • http://badboybiteaway.de/images/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://badboybiteaway.de/images/coin-master-hack-no-root_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/how-to-hack-coin-master-computer_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/getrobux-now_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/best-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/robux-free-c_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • http://badboybiteaway.de/images/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://badboybiteaway.de/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c68.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C68 24804 bytes
SHA-256: b9a91795c5181395e32996358fdbcda36cf8f4cbaec953bfe81a2d1224d733c9
font_01_sfnt_off0000857f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x857F 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off00008f22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F22 18732 bytes
SHA-256: 3b2a882a3eab689f8cc2f919f0b1382fe93a3de56946d789c538445f453e6892

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