Malicious PDF — malware analysis report

Static analysis result for SHA-256 96f2214c67027221…

MALICIOUS

PDF

34.6 KB Created: 2021-07-09 04:17:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 33441020f74a66151937997025d2e22c SHA-1: b18d459419d8bc57c1d07c9943f274fbe510dc05 SHA-256: 96f2214c67027221858aadc120fc0662ed46d879aadb895bcce8eec872396ae0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free in-game currency, specifically mentioning 'Coin Master' and 'Roblox'. The primary heuristic indicates that the PDF links to a redirector for a 'free generator / game hack'. The embedded URL http://netcdn.tw/app/406889139/spin-free-coin-master-game-hack is the most critical IOC, as it likely leads to a malicious site. While no scripts were explicitly extracted, the PDF structure and heuristics suggest a social engineering attack to drive users to a potentially harmful external resource.

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/spin-free-coin-master-game-hack PDF link annotation
    • https://shjbottle.com/upload/files/free-games-coin-master_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/good-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-t-get-free-robux-2021-site-youtubecom_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/can-you-get-robux-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/hack-facile-robux_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/car-crushers-2-hack-roblox_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/claim-free-robux-button_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/is-it-ileagal-to-hack-on-a-game-in-roblox_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/roblox-speed-client-hack_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-to-get-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/robux-offers_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
stream_002_off00003167.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3167 22956 bytes
SHA-256: 6a3c6a5dd65e6a944d57b860528d7819e3c264401a967c4e8f251b0d9c6e9520
font_01_sfnt_off0000651e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x651E 18176 bytes
SHA-256: 8b68a35672d5b21ea29aeea640c198d2f03cb2d1fa451451c8ac02328cee2fb7

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