Malicious PDF — malware analysis report

Static analysis result for SHA-256 94bdf78f9a326764…

MALICIOUS

PDF

35.1 KB Created: 2021-06-30 02:00:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 67b6e4d70d91031bead96a9686dda354 SHA-1: 6b6211bdec805f6229cfd9bee0776132d2f8a266 SHA-256: 94bdf78f9a32676454bb40a8511e7b385b546bb63f53bf87bccd8b0ffeee7ab3
102 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which are structured as SEO-optimized PDF links for game hacks. The document body explicitly mentions 'Roblox Invisible Hack Download' and includes a primary URL that likely leads to a malicious download. The presence of a mass external link farm and a ML classifier flagging the PDF as malicious strongly indicates a malicious intent to trick users into downloading potentially harmful software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/roblox-invisible-hack-download-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/how-to-get-robux-for-free-pc_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-op-weapons-in-your-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-fix-elysian-roblox-hack-crash_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-backpack-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-kill-hack-script-fe_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/get-free-robux-today-no-verification_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-games-like-minecraft-that-arnt-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-hack-app-android-download_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-playerexe-free_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/hacked-client-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-roblox-bird_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-crystal-redeem-code-star-wars-in-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-games-that-actually-work-2021_GM431946152.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
font_00_sfnt_off00003248.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3248 22144 bytes
SHA-256: 7a109fea18b4a5931487618037169a5298fc1d1a1c47f3aefdd119ad8c389771
font_01_sfnt_off0000632c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x632C 19396 bytes
SHA-256: 009e46213016d88299ef24ad826325f96d59c9ac50b57bb14cd9f2b4475e333d

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