Malicious PDF — malware analysis report

Static analysis result for SHA-256 66e4a578b76f6679…

MALICIOUS

PDF

34.2 KB Created: 2021-06-27 11:45:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e8b4b895376c5dba9ce0f4aadfba9a9c SHA-1: 95ff72b336ded56fac9023e2b8de6f8261d0f767 SHA-256: 66e4a578b76f66791d2ab954bc142af787fc04444f8d28741a4ec6731f767913
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to "how to hack Roblox" and directs users to a malicious URL. The ML classifier strongly indicated maliciousness, and the presence of numerous game-related lures suggests a common social engineering tactic. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent, likely leading to a phishing or malware download site.

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.co/app/431946152/how-to-hack-roblox-with-developer-tools-game-hack PDF link annotation
    • http://mbbs.hr/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-free-coins--spins_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/free-tiktok-username-and-password_GM835599320.pdfIn PDF document text
    • https://mbbs.hr/files/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/fly-hack-roblox-tm_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/roblox-free-play-online-login_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-coins-2021-coin-master-link_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://mbbs.hr/files/how-to-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/rbl-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/blox-fun-info_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/pokemon-go-free-coin-promo-code_GM1094591345.pdfIn PDF document text
    • https://mbbs.hr/files/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • http://mbbs.hr/files/free-robux-games_GM431946152.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_off00002dcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DCC 21920 bytes
SHA-256: 1133322a0a9506091033ab66aacbdc3ff02c3c57bda00a0b3813d0fd7922f731
font_01_sfnt_off00005e06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E06 19868 bytes
SHA-256: 4b2e42ba2e99d4e2196e1fc9eef012720d02092ca1293b59caa071b31b0cf406

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