Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8ebe39ee141b0cc…

MALICIOUS

PDF

34.8 KB Created: 2021-06-19 03:10:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 70ea8e03f56074efe292935eb868b466 SHA-1: 809b7bad0bdd81d71adcd668bdd0929313543792 SHA-256: c8ebe39ee141b0cc97ad2fe4ed99e5f409f518b726ca2403d47231e719a2d69e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/this-roblox-game-gives-you-free-robux-game-hack PDF link annotation
    • https://fud.iain-surakarta.ac.id/pustaka/repository/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/free-roblox-hakercom_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/mosttechs-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/coin-master-free-spins-16-04-19_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/console-code-hack-roblox_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/hiw-ti-hack-a-roblox-account_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/free-premote-group-on-roblox_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/roblox-hack-apk-2021_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/coin-master-hack-programers_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/code-for-free-skin-roblox-wild-revolvers_GM431946152.pdfIn PDF document text
    • https://fud.iain-surakarta.ac.id/pustaka/repository/can-hacking-in-roblox-get-youarrested_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_off00002fcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCB 22400 bytes
SHA-256: 5c49d4c1979cbb0050fc252e68d89e2141e62f2a92f1c7c58cdb920e47bbbfd5
font_01_sfnt_off0000619e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x619E 19612 bytes
SHA-256: 5f4b734238bbd7c110f136025daaef63a9adde491b0090b2e719949131239066

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