Malicious PDF — malware analysis report

Static analysis result for SHA-256 04b0634fb04b8d8b…

MALICIOUS

PDF

45.7 KB Created: 2021-06-11 08:15:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: c8f2022e22567b8df093222e67554fc5 SHA-1: 4fdc8860daa3a003be037271eecbb7374372356f SHA-256: 04b0634fb04b8d8b5bd72b4d2adc7c84340ad87028e147e3a030fb49c63816a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users interested in game hacks and generators. The primary lure is a link to 'roblox-free-jeff-the-killer-cape-game-hack', which is hosted on a known malicious redirector. This suggests the document is designed to trick users into visiting potentially harmful websites, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.tw/app/431946152/roblox-free-jeff-the-killer-cape-game-hack In PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/ro-ghoul-script_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/wurst-minecraft_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/tiktok-for-free-movies_GM835599320.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/red-boy-hack-roblox-download_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
stream_004_off000050f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50F2 26828 bytes
SHA-256: d2d8dd6556fb2c58daeab058e494b67aa5949ca45f8957e2d3ac537c2b32865e
font_01_sfnt_off00008e8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8B 18804 bytes
SHA-256: 3d4a8e7c8bc12b88fb64cab3cf031158460c0a624f418ee334f0aee2979f8df4

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