Malicious PDF — malware analysis report

Static analysis result for SHA-256 80bb9f7a6da45e77…

MALICIOUS

PDF

35.3 KB Created: 2021-07-01 16:05:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: fbf6545d27160f52d534ce50924b18b1 SHA-1: 0347b1add90745976f816301d1428febf6add850 SHA-256: 80bb9f7a6da45e770f85e3c4a0a95cd88a373d396f3ffda604b49a7884a5535b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic firing indicating it links to a 'free generator / game hack' redirector. The document body and extracted URLs reinforce this, pointing to a lure related to game hacks and free currency. The primary malicious URL identified is http://netcdn.co/app/431946152/can-you-get-alone-for-free-roblox-game-hack, which is likely used to deliver a secondary payload.

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/can-you-get-alone-for-free-roblox-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-death-sound-free-download-to-mp3_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-bloxburg-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-scripts-hack-dungeon-quest_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/dll-for-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-food-tycoon-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-high-school-money-hack-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-change-username-for-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-coin-master-free-spin-link_GM406889139.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_off00003221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3221 22588 bytes
SHA-256: c191c7be64ed9b5f86d8ad0bb86dedb0990133bbeeeec57a32f6ce049362fe60
font_01_sfnt_off000064d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D1 19056 bytes
SHA-256: c38150d98643560bcd4e2f7cfbebc60d06ef694158ee335e055c497343f82f23

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