Malicious PDF — malware analysis report

Static analysis result for SHA-256 246939075d173bfe…

MALICIOUS

PDF

43.7 KB Created: 2021-05-15 05:01:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: cab58e64191fceab348eae0a4e719513 SHA-1: 1551801dc53a30353431901ca65e9f894da8e61c SHA-256: 246939075d173bfe1c5c0410ffa3dcd857a6030df94a5c4ed345935c11dc2a2a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'Roblox Verification' and 'game hacks', directing users to a malicious URL. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious content or downloads. The ML classifier strongly indicated maliciousness, supporting the observed lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/431946152/roblox-verification-game-hack PDF link annotation
    • https://javexglobal.com/image/data/files/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/coin-master-free-spins-link-may-2021_GM406889139.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/coin-master-hack-spin-generator-tool_GM406889139.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/whats-robux_GM431946152.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/ultimate-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/games-that-can-be-hacked_GM431946152.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • https://javexglobal.com/image/data/files/coin-master-free-spins-2021_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
stream_003_off00004933.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4933 27180 bytes
SHA-256: b8a7f652bddba6f27859cb73d2a862a79ce6184c5c60c79bc575e6899f79823d
font_01_sfnt_off0000880d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x880D 18372 bytes
SHA-256: 8e16c624761c7815a00ee9013e3827e71f8aa93179f7b81ef6a1eeeaa97f0eaa

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