Malicious PDF — malware analysis report

Static analysis result for SHA-256 03dbaf8c356881df…

MALICIOUS

PDF

34.7 KB Created: 2021-07-09 06:23:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6283dbed8e485d85ff116c72c25916a5 SHA-1: b15f0c888bad9e9431bfe1a2edd446325304df08 SHA-256: 03dbaf8c356881df17a3b400856453676ab22fd8fd3b2e2fb854ac8ac95f6b13
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, leading to a lure for game hacks and free spins. The primary malicious URL is http://netcdn.tw/app/406889139/coin-master-links-free-spins-game-hack. This pattern suggests an attempt to trick users into visiting potentially harmful sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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.tw/app/406889139/coin-master-links-free-spins-game-hack In PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/try-minecraft-free_GM479516143.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/tiktok-likes-free-2021_GM835599320.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-hack-roblox-pizza-place_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/roblox-how-to-get-any-gamepass-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-free-spins-2021_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_off00003178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3178 22984 bytes
SHA-256: e7d56007640bb9118296aab279bcb82607ffef19390100ac184d7b55262658b1
font_01_sfnt_off000064f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F2 18344 bytes
SHA-256: 6ad1108e81c5525844192ddb13ab38111abd218b87fc7994796a13e0178d8bfd