Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b30e183ea35d2ff…

MALICIOUS

PDF

34.3 KB Created: 2021-07-07 22:14:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ec258e14dc1a768aeedb4b6a44d8d0d5 SHA-1: fd367421a6b4d2ffa3df6c86e78e44b8b066abdf SHA-256: 9b30e183ea35d2ff656df1dfdb00af22bccffd3d94b555fe1493842002fd1634
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.tw/app/479516143/is-minecraft-free-on-xbox-game-hack PDF link annotation
    • http://www.elibrary.perludem.org/repository/roblox-phantom-forces-free-vip-server_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/robux-generator-2021-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-roblox-birthday-card_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/game-guardian-roblox-speed-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-hack-somone-roblox-account_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-hackprogamers-com_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/robloux-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/download-roblox-free-mundschutz_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-hack-roblox-to-get-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-make-your-own-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-hack-roblox-deathrun_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spins-and-coins-group_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-lost-world-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_off00003360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3360 21532 bytes
SHA-256: dbd413e04f92abe8e7d68f58c74429322488611d1ec426fd1d33d56ba5806c77
font_01_sfnt_off00006257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6257 18596 bytes
SHA-256: 987f99d7e2443cf381540eae1143ad62299bf58b05908f5564068197b2bc8841

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