Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffe6b706bb0a5f28…

MALICIOUS

PDF

34.6 KB Created: 2021-07-20 23:50:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ab7b60bc2682370a730f986cc24254e6 SHA-1: 2a80bd8285d60a0a18493560bd57258d38565cdb SHA-256: ffe6b706bb0a5f28b46636a0b394fb926db55a6836d6bd877f50e3bce3f908c4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a lure of free game-related content, such as Minecraft generators, to entice users to click on embedded links. The primary link, http://netcdn.tw/app/479516143/minecraft-bedrock-server-hosting-free-game-hack, is identified as a redirector likely leading to malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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.tw/app/479516143/minecraft-bedrock-server-hosting-free-game-hack PDF link annotation
    • http://libnh.stikesnh.ac.id/repository/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-free-spins-link-today-facebook_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_off000030e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E3 22980 bytes
SHA-256: 45ce0c265a58a577bc55822f3d241f4383b76a6ac078d283251eb407b525eb20
font_01_sfnt_off00006414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6414 18672 bytes
SHA-256: c45ccb7756ad31f0eb1659f3c43916dbd490baa96d6c6b1730beaec095da97be