Malicious PDF — malware analysis report

Static analysis result for SHA-256 8dbb762318334ed3…

MALICIOUS

PDF

52.1 KB Created: 2021-06-09 07:38:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ce9366664747d936761efee77a4956b1 SHA-1: 265127f0b4277f2da7e21d081c0e22839f856360 SHA-256: 8dbb762318334ed32c2f0d7ee93c51a23a491e5b1b3ed4f880db30d22c5002d5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that promise game hacks and free in-game items, a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9464

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.tw/app/431946152/roblox-apocalypse-rising-shenanigans-mod-cheat-codes-game-hack PDF link annotation
    • http://d-cision.nl/images/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/how-to-get-free-tiktok-fans_GM835599320.pdfIn PDF document text
    • http://d-cision.nl/images/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://d-cision.nl/images/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://d-cision.nl/images/free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
    • http://d-cision.nl/images/appbounty-robux-hack_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://d-cision.nl/images/free-robux-website_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/how-to-be-a-builders-club-in-roblox-free_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • http://d-cision.nl/images/cheating-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://d-cision.nl/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://d-cision.nl/images/wurst-18_GM479516143.pdfIn PDF document text
    • http://d-cision.nl/images/roblox-gift-card-for-free_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_off00005242.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5242 30840 bytes
SHA-256: 3e71881dc4f547547e9453fa7e668194e8fdb51b234fccb8c46c3ff159dbe4e4
font_01_sfnt_off0000987e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x987E 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000a590.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA590 19416 bytes
SHA-256: 815f6e147274e75cd56893b361bb3c08925f08dae0f2d38dcecdadc4f19d74da

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