Malicious PDF — malware analysis report

Static analysis result for SHA-256 54d367fa334e535f…

MALICIOUS

PDF

35.9 KB Created: 2021-06-30 07:25:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 1af22938c570c5f39224b4c705efa36f SHA-1: 1298c13ae9abe4eef5180b16976c9878bcfff4b3 SHA-256: 54d367fa334e535fd1cd89840b65866962d5171a29636ba92ea74f6a9671cf4a
82 Risk Score

Malware Insights

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

The PDF document contains embedded URLs and text that suggest it is a lure for downloading malicious files related to game exploits and cheats. The presence of external URIs and the ML classifier's high confidence score indicate a malicious intent to trick users into downloading potentially harmful content. The document body, though partially corrupted, contains references to 'commande-cmd-hack-roblox-game-hack' and various URLs pointing to exploit-related PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/commande-cmd-hack-roblox-game-hack PDF link annotation
    • http://pustaka.ust.ac.id/repository/roblox-free-exploit-that-support-fireclickdetector_GM431946152.pdfIn macro / runtime command snippet
    • http://pustaka.ust.ac.id/repository/roblox-admin-hack-code_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/logiciel-hack-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-tiktok-accounts_GM835599320.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/real-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-to-hack-roblox-working_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-free-vip-servers-jailbreak_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/roblox-redeem-card-pin-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-by-doing-nothing_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/robux-hack-cheat-engine-62_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/friendly-smile-roblox-free_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/google-how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/free-robux-24-info_GM431946152.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/coin-master-free-spins-link-download-ios_GM406889139.pdfIn PDF document text
    • http://pustaka.ust.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://netcdn.co/app/431946152/comPDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000035a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35A4 22284 bytes
SHA-256: f8f3b9ae64ab8d7686c7809f0a575ad76923959dd41f2cecbefa966890e19e08
font_01_sfnt_off00006737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6737 19092 bytes
SHA-256: f29246173784be47344655a5b42819ce28ddaeaf04cb6fc7c11ea53faefe3644

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