Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3ceda1a99ce8a42…

MALICIOUS

PDF

34.0 KB Created: 2021-06-30 04:19:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: ae6e8fddc80294bc076f2f3aa91fc710 SHA-1: 89dc6f750b94b3c93d7a59540495e8e72101387a SHA-256: c3ceda1a99ce8a429f4349ef72db1162744fa5943abdc3b28408087b64f4126d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, disguised as game hacks and generators. The document body explicitly mentions 'How To Hack In Roblox To Get Free Robux' and includes a primary malicious URL. While no scripts were extracted, the PDF's structure and embedded URLs strongly indicate a phishing or scam attempt designed to lead users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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-in-roblox-to-get-free-robux-game-hack In PDF document text
    • http://pustaka.bbppketindan.info/repository/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-tiktok-likes-75_GM835599320.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-promo-codes-2021-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-piano-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-roebucks_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-hack-no-verification-on-ipad_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/how-to-play-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/minecraft-win-10-free_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/free-robux-cards-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/roblox-how-to-look-cool-for-free-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/minecraft-for-free-games_GM479516143.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • http://pustaka.bbppketindan.info//repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.bbppketindan.info/repository/where-to-get-free-roblox-clothes_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_off00003096.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3096 21396 bytes
SHA-256: c99e7211141c72e4c05f2af4126a4806c802054c749bbd085f6a1eed1b0624e6
font_01_sfnt_off00005f6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F6A 19228 bytes
SHA-256: 1761dfdb6e5fc8269901a6f637c54c38e05638f0c52e962698e219aa66dfac67

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