Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad4cc78686e8fed7…

MALICIOUS

PDF

35.1 KB Created: 2021-06-30 04:06:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: dc6a45340e760d4efbd17e7390a3ec52 SHA-1: 94dafb0b479625e1360c53950b122d459e02b1d6 SHA-256: ad4cc78686e8fed776e3e5fe9a4d3894bc47d02034104b7eabb9f4824b174a49
82 Risk Score

Malware Insights

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

The PDF document contains a high-confidence heuristic indicating it links to a game hack redirector, specifically for 'free Robux'. The embedded URL, http://netcdn.co/app/431946152/how-to-get-free-robux-by-pressing-g-game-hack, likely leads to a malicious site. The document body and heuristics suggest a social engineering lure to trick users into visiting this URL, potentially for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-get-free-robux-by-pressing-g-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-stucid-fly-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-scams_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-burd-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/cheat-codes-for-roblox-bloxburg_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hacked-hat-roblox-t-shirt_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-bedrock-edition-download-pc-free_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-pet-simulator-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-draw-2-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-speed-hack-for-pc_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/app-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-gg-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/bux-today-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-de-robux-100-real_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-hack-app_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000033af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33AF 21620 bytes
SHA-256: aaafa5f8746526e9c5d2830e7cf073924a8c380e5a5ec4f607c2aafe47f53582
font_01_sfnt_off0000630c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x630C 19436 bytes
SHA-256: 5c1a137b569e6310fb83b7a399896eb8d5962984eb151b04394f9c8300445f3b

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