Malicious PDF — malware analysis report

Static analysis result for SHA-256 f648880b3846e339…

MALICIOUS

PDF

50.7 KB Created: 2021-05-12 00:31:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ba73509d705c63c957783d678a183176 SHA-1: fbd780f63150a7c166fd5ec929179a8fe456ab59 SHA-256: f648880b3846e339bcde82ddbe6d36d85d484424750ca7fbb763f2c87ce3fb8c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure. The embedded URL, https://netcdn.xyz/app/431946152/how-to-make-a-roblox-group-for-free-game-hack, directly supports this finding. While no scripts were explicitly extracted, the PDF structure and the nature of the lure suggest it's designed to trick users into visiting a potentially malicious site, possibly for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9247

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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/how-to-make-a-roblox-group-for-free-game-hack PDF link annotation
    • https://tokunfome.com.br/images/coin-master-daily-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/give-free-robux_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/roblox-robux_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/can-lucky-patcher-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/master-coins-free_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/instant-robux_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/minecraft-pocket-edition-free-ios_GM479516143.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_off000053ab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53AB 26680 bytes
SHA-256: ddb2447462e9af115740cf0843c7f51796c622fd59c20d5d7a60fa8154d9e5f1
font_01_sfnt_off00009169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9169 6796 bytes
SHA-256: 444c1a7a5f759cf8ef96265781acbb31af91c414c56e6801f4bca148dcff5b97
font_02_sfnt_off0000a204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA204 19020 bytes
SHA-256: d86a0664516f84ca778de604dc8f5b6c02622b942defeefdc42ca528d3381c5a

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