Malicious PDF — malware analysis report

Static analysis result for SHA-256 993360eeb342b1a4…

MALICIOUS

PDF

41.4 KB Created: 2021-05-13 18:10:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fff68831414cff6bf30238a16db31a31 SHA-1: 4dfb81fa381c3892489b1b5b18c53c92c899e6ca SHA-256: 993360eeb342b1a4c5c51e8562c155fe70fa92666b43fb627fd308817436ce00
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to 'free Robux' and game hacks to entice users to click on a malicious URL. The embedded URL, https://netcdn.xyz/app/431946152/free-robux-discord-game-hack, is designed to redirect users to potentially harmful content or initiate a malware download. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/free-robux-discord-game-hack PDF link annotation
    • http://www.notaioricci.it/images/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://www.notaioricci.it/images/robux-now_GM431946152.pdfIn PDF document text
    • http://www.notaioricci.it/images/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/coin-master-unlimited-spin-and-coin-hack_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/coin-master-pc-game-free-download_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.notaioricci.it/images/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • http://www.notaioricci.it/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/script-executor-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.notaioricci.it/images/free-roblox-items-codes_GM431946152.pdfIn PDF document text
    • http://www.notaioricci.it/images/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/free-minecraft-java-server_GM479516143.pdfIn PDF document text
    • http://www.notaioricci.it/images/how-to-hack-coin-master-spin-ios_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/free-spins-coin-master-links-thursday-november-28-2021_GM406889139.pdfIn PDF document text
    • http://www.notaioricci.it/images/mc-hacks_GM479516143.pdfIn PDF document text
    • http://www.notaioricci.it/images/download-coin-master-hack-tool-v1-9_GM406889139.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
font_00_sfnt_off000047a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47A8 24292 bytes
SHA-256: c1bdb46bd44a2fefe21da99170a963f25a791c97e1b8f1c4534e64547b9e2b98
font_01_sfnt_off00007efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EFB 18476 bytes
SHA-256: bd0365f7f2eefd731cbfcd90ede0e91cb43578b4b980f4195e4871e1034addc2

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