Malicious PDF — malware analysis report

Static analysis result for SHA-256 7161fdbbec6f4f60…

MALICIOUS

PDF

47.6 KB Created: 2021-06-03 13:22:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 89e61d8f91fbddbf0eb690b6f8ff5a9c SHA-1: 80644a3744e46261ca7b3bc94d12978c2ee62eed SHA-256: 7161fdbbec6f4f60b72e84a042afa838547b53409be2dbffc6a9fda62e1acf08
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to free game hacks and generators, directing users to a suspicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of external URIs and the nature of the lure suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.online/app/479516143/how-to-make-your-own-minecraft-server-for-free-game-hack PDF link annotation
    • http://elib.acls-indonesia.com/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/robux-offer-wall_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/easy-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/tiktok-views-free_GM835599320.pdfIn PDF document text
    • http://elib.acls-indonesia.com/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000052fc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52FC 25916 bytes
SHA-256: 8a640fcbb0d10c6466cc0f1f163b761379048d5ec44f2e03f361dbccf7fc0fa1
font_01_sfnt_off00008d43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D43 2840 bytes
SHA-256: 30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37
font_02_sfnt_off000096f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96F6 18460 bytes
SHA-256: 43abef8b834297908dc205ac191a436a457546b124377fb637ef7db2584f74fc

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