Malicious PDF — malware analysis report

Static analysis result for SHA-256 201399b4b79084c9…

MALICIOUS

PDF

35.8 KB Created: 2021-07-08 09:32:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 86ec7072ea62bc6744b77b9ac7fa44af SHA-1: ab7e61f441f986dc5d947a9e6f40c648b033986b SHA-256: 201399b4b79084c987deace417a7a3207757ac929ffdd83c15f6173e489024e9
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/406889139/100-free-spins-coin-master-2021-game-hack PDF link annotation
    • http://sellitafrica.com/media/storage/editor/files/roblox-free-robux-hack-2021-generator-cheat_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-roblox-aimbot-in-every-game-for-mac_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/cheat-engine-en-roblox_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/codigos-para-hackear-roblox_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-real-2021_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-roblox-app_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-get-free-items-in-roblox-games_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/minecraft-mod-updater_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-hack-roblox-accounts-to-do-good-stuff_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/flame-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-get-free-robux-2021-ios-no-human-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003505.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3505 22920 bytes
SHA-256: 8c408915c7fd491641609917355a51a475bab8cd7b094388463003b6e6649d76
font_01_sfnt_off0000686a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x686A 18576 bytes
SHA-256: 92d497f8bb7a4b7cecbf731ebca98dbb8eaec3bbe78b3fd35d47c848e72ff159

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