Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ae5a7eb306e4416…

MALICIOUS

PDF

44.7 KB Created: 2021-06-09 12:50:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8a56d215f9f6ce8256aba44e97f8d3c9 SHA-1: ad457b516864d6690cfd903338340a5921d80f99 SHA-256: 0ae5a7eb306e44164332f619761c12a60e090167bc4807c399edbc77f71ac1af
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 0.9865

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 https://netcdn.tw/app/431946152/how-to-get-a-free-robux-hack-game-hack PDF link annotation
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-hack-with-facebook-login_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/free-pet-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-free-coins-in-coin-master-game_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/sign-up-today-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/hacks-para-coin-master_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-hacked-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/minecraft-free-ios-no-verification_GM479516143.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://preverjaboticabal.com.br/assets/uploads/canal_alpha/files/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005022.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5022 25352 bytes
SHA-256: 0af02730ec163d3a7f891c9250f059d72f63a691006e63502ef7629acac729b2
font_01_sfnt_off00008aba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ABA 18680 bytes
SHA-256: a81166f262c55566af3c94af95c92d9cab7dec53800cf51f43763bbce6a1b035

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