Malicious PDF — malware analysis report

Static analysis result for SHA-256 f458a416ed18dddc…

MALICIOUS

PDF

34.4 KB Created: 2021-07-08 12:28:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a15af88e5b117c1efd0b85527164b5d3 SHA-1: e60492bd7ee0022fb17d333e72f0f816faab3e18 SHA-256: f458a416ed18dddc99b4fdf0faaa4bcd48c8ab14e3be74a7872aaf606ca5e61a
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.tw/app/406889139/coin-master-gold-cards-free-link-game-hack PDF link annotation
    • http://wadimor.co.id/media/imagesfiles/how-to-hack-roblox-4-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-roblox-avatar-ideas_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/hackear-cuentas-de-roblox_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-spins-coin-master-april-2021_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/download-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/minecraft-bedrock-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/best-hacked-client_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-free-admin-on-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-hack-in-roblox-in-3-step_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-free-spins-and-coins-generator_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-free-robux-2021-codes-in-game_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/get-free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/ipad-hacks-for-roblox_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
stream_002_off00002fc9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FC9 23000 bytes
SHA-256: b6f19bfb87925438f8ac3fb054a5d8e16d3f72d1bd0530ce8b37338b43b3d9f1
font_01_sfnt_off0000636e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x636E 18416 bytes
SHA-256: f5d74da11fc7768080f5307fe29cc26711bb20e71de5af0a17c090bfb21e796a

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