Malicious PDF — malware analysis report

Static analysis result for SHA-256 dda6e9b56d6f8e88…

MALICIOUS

PDF

41.0 KB Created: 2021-04-25 07:20:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c2f7606710c8cca6a95c8f1cc5f2c2d4 SHA-1: 8c67496975effac01fc5586941435c56e8df2183 SHA-256: dda6e9b56d6f8e88f6c85b0e5780559502b74f29410ea4fabfef9694a7d4f3fe
82 Risk Score

Malware Insights

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

The document contains a lure for free Robux and game hacks, directing users to external URLs. It also includes instructions to disable security software, indicating a malicious intent to bypass defenses. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious document designed for user deception and potential payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 4

  • Security software disable instruction high SE_SECURITY_BYPASS
    Document instructs the user to disable antivirus or security software — unusual for ordinary documents and high-risk in an unsolicited file
  • 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/roblox-hack-free-robux-and-membership-hackaron-game-hack PDF link annotation
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/has-roblox-been-hacked.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/cheat-roblox-jailbreak-2021.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/free-robux-sans-hack.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/hack-para-robux-gratis-2021.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/free-robux-best-hack.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-hacking-robux-no-suvey-and-download-2021.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-phantom-forces-hack-script.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/how-to-get-bc-for-free-roblox-2021.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/https-roblox-hack.pdfIn PDF document text
    • http://www.technibuild-group.com/uploaded_files/userfiles/files/roblox-lumber-tycoon-2-money-hack-script.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004038.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4038 26248 bytes
SHA-256: d0cfb72a59e868712e7e1c8a39710c0bdd676e183cd6fc9ccd5fd601ea428b16
font_01_sfnt_off00007b6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6B 19448 bytes
SHA-256: dd949dc8a2784e83a29887ce9642b73bf115ce947bf85e369247e1b655366a51

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