Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf06217ecf9fe37…

MALICIOUS

PDF

46.8 KB Created: 2021-06-03 10:25:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 3bc2d5c42b58e0ad62c6dda748d616da SHA-1: cc022dce9577b88b431c571ab83671c2a46d1490 SHA-256: faf06217ecf9fe37743a8289b32ebfd062d9e2eb1d92317207bca16029ae887b
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 0.9769

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.online/app/406889139/coin-master-unlimited-spins-hack-game-hack PDF link annotation
    • http://digilibfisip.unla.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spin-and-trading-group_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-1021_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/robux-prices_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/allsmo-free-tiktok-and-instagram_GM835599320.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hacks-no-downloading_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/how-to-download-minecraft-for-free-on-windows_GM479516143.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/free-spin-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-online_GM406889139.pdfIn PDF document text
    • http://digilibfisip.unla.ac.id/repository/coin-master-free-spin-redeem-code_GM406889139.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_004_off00004fd9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FD9 25332 bytes
SHA-256: a8d51090c684ce46f3b8b7e49f45b43b481188167bf25ed9314e2d1c23bc9267
font_01_sfnt_off00008996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8996 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off00009349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9349 18584 bytes
SHA-256: bff27dcdedd5af8a0d687a24d9b2ce7acea36a5c8901c6afee4cb29d8b6ebd85

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