Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b58d55d5afc167d…

MALICIOUS

PDF

32.9 KB Created: 2021-07-03 21:45:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: dfe47360d786bcce37f96a2c353170b5 SHA-1: 4836c67b480b9123f40c45d01a680717054c3337 SHA-256: 0b58d55d5afc167da265c98733fa2a84b7ac53513b1cc6047f6d16620d21937a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

The PDF document contains multiple links and a lure related to game hacks and free currency for popular games like Roblox and Coin Master. The primary link, http://netcdn.tw/app/431946152/free-headless-head-roblox-game-hack, is flagged as a high-severity finding and redirects to a malicious URL. This suggests the document is designed to trick users into visiting a potentially harmful site, likely to download malware or engage in other malicious activities.

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/431946152/free-headless-head-roblox-game-hack PDF link annotation
    • http://librarystkippgribl.com/repository/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-free-spin-no-offers_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-robux-roblox-game-image_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/roblox-gang_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/113-hacked-client_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-pet-snacks_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/robux-generators-that-actually-work_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/blogger-coin-master-free-spins_GM406889139.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_off00002dde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DDE 21184 bytes
SHA-256: 4138be465979d807347a7377570b88cff3cd92560539b8f46a5b836da4a26c08
font_01_sfnt_off00005c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C07 18824 bytes
SHA-256: 7384526ce2dd4d92cd45550fda12bae152729c1e692f7aa7bf6070bc228cd510

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