Malicious PDF — malware analysis report

Static analysis result for SHA-256 a71604bacd369f0b…

MALICIOUS

PDF

35.2 KB Created: 2021-07-03 15:37:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: a52216ede690434de7bd5e3ae339beff SHA-1: 838ff70f6bcf005bb94020a199dc7e3ac02099e6 SHA-256: a71604bacd369f0b2f63a3538a032488b3e74da91e00f112ce9ee3b81a2478a1
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/479516143/minecraft-apk-free-download-game-hack PDF link annotation
    • https://limebug.com/media/storage/editor/files/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-do-you-hack-peoples-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-roblox-accounts-that-work_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-robux-inspect-code-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-when-will-counter-blox-remastered-be-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-characters-without-robux-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox-hacker-group_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/hack-client-roblox-may-2021_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-daily-spin-link_GM406889139.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/free-promo-codes-roblox-group_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-robux-easy-with-a-hack_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-roblox-hair_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://limebug.com/media/storage/editor/files/coin-master-60-spins_GM406889139.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_off00003206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3206 23216 bytes
SHA-256: 19982febba4d5187b0c67f8b42ef0e5159cb8420604a02dd60a573e2852fca3e
font_01_sfnt_off00006511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6511 18924 bytes
SHA-256: 1de344d99f1e631699adb44c0f23fb2d6ffa0cf287341dc691753e7d540fe775

Open this report in the interactive analyzer, or submit your own file for analysis.