Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc4d7901d9404f65…

MALICIOUS

PDF

33.6 KB Created: 2021-07-06 07:32:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 9fd8ed74d83748c3530f25ec56cae976 SHA-1: ce98d913391b562c00b15a7925cd72f10671e22c SHA-256: cc4d7901d9404f65ace2b162cb409ab44c1d2f17a94a93e9d76159e5626403ca
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/free-to-play-minecraft-servers-game-hack PDF link annotation
    • http://projectunionstreet.com/library/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-giveaway-live_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/apocalypse-rising-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-gift-card-gewnorater-for-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-fun-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-free-robux-in-10-seconds_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/hack-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/100-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://projectunionstreet.com/library/repository/coin-master-apk-hack-358_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_off00002f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7B 22088 bytes
SHA-256: fbe25f3493ddc843c2c23e2be5f8c58b023e6b2625347fdbcc72615fcc353d88
font_01_sfnt_off00005fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEF 18520 bytes
SHA-256: 37864ac22ea529ff2272a0a474f431c0589d380919606f5f41dcfd9db217af1b

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