Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad5fe3b3f0a7f000…

MALICIOUS

PDF

36.0 KB Created: 2021-06-27 22:23:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 144693c372176becdd82f330b6b63077 SHA-1: d2d21fbe046ed4a37d401079ffb801d231615316 SHA-256: ad5fe3b3f0a7f00024c558ff714b4a541388bb06f8a61d80bb232f9af9c6b5e2
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 0.9980

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.co/app/431946152/how-to-hack-people-and-get-there-robux-game-hack PDF link annotation
    • http://www.siahotel.com/userfiles/files/easy-basic-hacking-engine-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/create-roblox-cheat-script_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/hack-for-pubg-uc_GM1330123889.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/coin-master-heaven-daily-free-spins-and-coins-links_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/roblox-free-accessories-2021_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/game-hunters-coin-master_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/pointsprizes-com-earn-free-robux-legally_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/robux-free-2021_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.siahotel.com/userfiles/files/roblox-how-to-get-free-items-in-catalog_GM431946152.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_off0000328e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x328E 22736 bytes
SHA-256: 6a0ef651de04ec5e484978f178fee9438e71d0930bf12a86f177473019cf0a52
font_01_sfnt_off000065a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A3 19732 bytes
SHA-256: 6c01a0f95d78929885faffefef44c1f1c5292fe0f7edfefaa5a1d224a7ac30fb

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