Malicious PDF — malware analysis report

Static analysis result for SHA-256 58140dd24bd6b028…

MALICIOUS

PDF

33.7 KB Created: 2021-07-03 15:58:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 80fba12c79c42cdc21362b2faaabd5c3 SHA-1: 35dae480a50dd1b459c9967b65faf7dc08f8c44b SHA-256: 58140dd24bd6b02810f497c2654a1fd1728ccb199bd25f2bbff37dfbc10df016
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-windows-10-free-code-game-hack PDF link annotation
    • http://ggmtc.net/userfiles/files/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/20210-robux_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-inspect-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/cool-avatars-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-robux-obby-limited-time-only_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-script-button-for-hacks-fake_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-get-free-robux-on-roblox-promo-code_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/minecraft-thumbnail-maker-free_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-printables-free_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/spins-coin-master_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-o-get-free-coin-master-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_off00002eb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB4 21964 bytes
SHA-256: 5e219e04c834ad39e51d06944d02df0ae6e1ad8d2392d5317ddfff604e4ddbc9
font_01_sfnt_off00005f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F0B 18812 bytes
SHA-256: 64384bfcc58c1bbdf03ee3f883a0be16d7cce96ae7e77f1df9d799b764379cfd

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