Malicious PDF — malware analysis report

Static analysis result for SHA-256 12ac5fa5bc0b7cd5…

MALICIOUS

PDF

42.1 KB Created: 2021-05-11 01:35:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3b975254ff7e65194426a3a12b46aa5c SHA-1: 7f161d243a1191ed50ce1d33e94f3525f2fdde68 SHA-256: 12ac5fa5bc0b7cd5c8fb43f6c6239b2b21b7187b400755606fe97a5f5688a5f6
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 0.9971

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/406889139/coin-master-hack-ios-reddit-game-hack PDF link annotation
    • http://perpustakaan.ftk.uinib.ac.id//repository/hacks-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/daily-free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/coin-master-fan-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/free-robux-only-username-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/roblox-free-download_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/wurst-112-2_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id/repository/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • http://perpustakaan.ftk.uinib.ac.id//repository/coin-master-spin-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
stream_003_off00004a2a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A2A 25644 bytes
SHA-256: 78c8b85d8a1c3d910ae0f12b77e5ae5dc4c11824202921f90bfa284237e06069
font_01_sfnt_off0000834f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834F 17888 bytes
SHA-256: f6db0d5ce37e689a46ceb71450432421ac9d8148bbd676fee9db03c905ab63a7

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