Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b959869f5c5990a…

MALICIOUS

PDF

31.8 KB Created: 2021-07-05 18:47:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ea42b917a02377d5ab777ee5bd867518 SHA-1: 49ddb338e5b934c4163593a330dc49f1e8aa5691 SHA-256: 4b959869f5c5990a78c7e07d60d3f6ac8901e09c1ae4950bd24b834f1a525906
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 0.9824

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.tw/app/479516143/toolbox-for-minecraft-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-a-roblox-account-2021-october_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-download-wurst_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-obby-working-100_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-hacked-places-free-download_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-esp-aimbot-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-coins--spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-spin-hack-apk_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-roblox-pastebin_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-ios-cydia_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-no-typing-stuff_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-supreme-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-vehicule-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-mobile_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_off00002a3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A3B 21652 bytes
SHA-256: 08f62b5087ca724505e3269d2b461b7f163a8f28bf35a5b4f5ceb7931a2657ca
font_01_sfnt_off00005980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5980 18440 bytes
SHA-256: 1cf31c3bb7bdb96ad8627629978fa978d99bbfc1b3e6ff44e7e3c3bf643f3fe7

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