Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bf977b6599379f5…

MALICIOUS

PDF

33.1 KB Created: 2021-06-19 09:40:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: f65112c2b763ca9f70d2eea5126d7dc9 SHA-1: a499bc1548c6b5e5016cde9e270d1c924a58f8d3 SHA-256: 2bf977b6599379f5e509104da3dab60f9f1e640fc82413a506f3b093d2abeef9
82 Risk Score

Malware Insights

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

The PDF document contains numerous links and a call-to-action lure related to game hacking and free in-game currency, specifically targeting popular games like Roblox and Minecraft. The primary link, http://netcdn.co/app/431946152/how-to-hack-someone-in-roblox-2021-game-hack, is identified as a redirector to a malicious site. While no scripts were extracted, the document's structure and embedded URLs strongly suggest it is designed to lead users to exploit sites or download further malicious content, likely through a client-side exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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-hack-someone-in-roblox-2021-game-hack PDF link annotation
    • http://library.ulb.ac.id/repository/how-to-get-free-robux-on-computer-2021-easy_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/como-generar-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/speed-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-2021-april_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-spins--spins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-groups-that-give-you-free-clothes_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-sketch-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-jailbreak-hack-autorob_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-spins-coin-master-links-app_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-t-shirt-adidas-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-link-today-hack_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_off00002abb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ABB 21976 bytes
SHA-256: 978023354058af91c3eb2dcea6de3bcaca38aba975bc8542ce1a3b5e2e5ccc18
font_01_sfnt_off00005b26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B26 19480 bytes
SHA-256: e0243f750979c0414a089bf88b1d5c55f848b810fb80d710d6445a810456fdf6

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