Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a39b9aebcd0f149…

MALICIOUS

PDF

49.6 KB Created: 2021-05-12 20:33:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: d426f4f898c077e8795040e937930c66 SHA-1: ba57e4bc027c385f103eca628f968f5fb47f12a6 SHA-256: 0a39b9aebcd0f1494a530dc89daaefc8ff2c9bc57b6829d81b9431345c9dfb44
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 0.8642

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/robux-free-robux-game-hack PDF link annotation
    • https://www.sonestad.se/library/repository/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/robuxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/best-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/hack-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-top_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000492f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x492F 25808 bytes
SHA-256: 4b3545dbb45c9fabda991955375d250a425a65f98ff2b10ec481b742987ff2b1
font_01_sfnt_off000084f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84F5 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00009019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9019 6636 bytes
SHA-256: 62075f0fe13502d46afb6e55e83d440c29ef4988399537df1f86e7653ce3b744
font_03_sfnt_off0000a025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA025 18012 bytes
SHA-256: 3f1ded8a9c51e4f0f41c660fd84d3573ebe8f92a83837bcaa523a9614d650e73

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