Malicious PDF — malware analysis report

Static analysis result for SHA-256 9629f768f0208ed8…

MALICIOUS

PDF

35.8 KB Created: 2021-07-02 03:37:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 15eb3892d1e7508c63cf0edd1358082f SHA-1: fb0e62953adbc2dde846946c95fc38f92653c97c SHA-256: 9629f768f0208ed88abfce4f550ee3a8bf42d66f657909e930f32acf914cc015
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and free currency, directing users to the malicious URL http://netcdn.co/app/431946152/promo-code-free-robux-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a social engineering attack designed to redirect users to potentially malicious content or download further payloads. The ML classifier strongly supports the malicious verdict.

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.co/app/431946152/promo-code-free-robux-game-hack PDF link annotation
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/cute-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/free-spins-coin-master-site-wwwquoracom_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-obc-2021-discord_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kotabjm.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links_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_off000032ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32ED 23012 bytes
SHA-256: 9713b022e5843cf20dfa463f15c652d316764d877a36a13b4708af8c29b8ef53
font_01_sfnt_off00006682.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6682 19304 bytes
SHA-256: 3279f8714710b632350f0bd88caa2cfc89f00fefd6c14113758548b23fb72056

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