Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e2f7a98b7408296…

MALICIOUS

PDF

33.9 KB Created: 2021-07-05 18:38:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 64728f671c06c4ebde41847cc1ab0656 SHA-1: 88330720005d4263682800a257efa7e8491734a1 SHA-256: 6e2f7a98b7408296a4f19ff9d13839e14715ee4c20cca0cea2c6bd1caed1b4e4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, masquerading as generators for game items like Minecraft skins or Robux. The primary malicious link identified is http://netcdn.tw/app/479516143/minecraft-skins-free-girl-game-hack. The document's structure and embedded links strongly suggest it is designed to lure users to potentially malicious websites, likely for further exploitation or credential harvesting.

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.tw/app/479516143/minecraft-skins-free-girl-game-hack In PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/free-spins-for-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/roblox-piano-hack-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/rewardrobux-com_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/how-to-hack-a-minecraft-server_GM479516143.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/how-to-get-free-roblox-builders-club-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/free-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/50-free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://pustaka.minangkabau.unand.ac.id/repository/minecraft-for-free-on-phone_GM479516143.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_off000032a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32A5 21892 bytes
SHA-256: a1085c7e0b2ddeb9f724ca0bcd5d46ae4bf4f1500f99534be57febcb3a150604
font_01_sfnt_off00006290.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6290 18100 bytes
SHA-256: 70cc60e58827411371e7f97bcef6641e7ee3ce3b80f3f16580f1bbb3bdc32b02

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