Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b148b44cb965651…

MALICIOUS

PDF

48.6 KB Created: 2021-05-10 16:35:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0591856c91e6df374d55c4ab2b8f1c88 SHA-1: 58a6e65e52584605049d6545f4bcbc7a8c1d6188 SHA-256: 0b148b44cb965651991f88cf3d89cb30e280dea0245ba43be6be14cfc755247e
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks, specifically for Roblox, to entice users to click on a malicious URL. The primary URL identified, https://netcdn.xyz/app/431946152/hacks-for-roblox-prison-life-game-hack, is likely a redirector to a malicious payload or phishing page. While no scripts were explicitly extracted, the PDF structure and heuristics suggest it's designed to exploit user interest in game cheats to facilitate initial access, likely via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9228

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/hacks-for-roblox-prison-life-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/rewards-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-23-march-2021_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-rape_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-toy-codes_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-heaven-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/you-promised-my-son-free-robux_GM431946152.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_off000046ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46EE 32880 bytes
SHA-256: a51a9b982cd0cc6c2f0f26a85640168c25d273cc7acb1bfa3546a5b34b91096b
font_01_sfnt_off0000910a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x910A 2880 bytes
SHA-256: 106de1d187d148d03f5c34a802444a7e62d93662ddf359d17cd55770c6c16081
font_02_sfnt_off00009afa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AFA 18620 bytes
SHA-256: e3f2ecfa212854396a9435be993bd19ffc5a7ead26ebe64f65252827dfac6040

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