Malicious PDF — malware analysis report

Static analysis result for SHA-256 578fd78fa327d829…

MALICIOUS

PDF

44.1 KB Created: 2021-05-12 21:15:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: fd7ed091e3cd65b8ea2c67d5a5c40553 SHA-1: c89e9876c899521fb6acdc3ed903f75c4d106e57 SHA-256: 578fd78fa327d829422d9f334e05676a626a911283442cad7c88c2d2ea3a3189
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 0.9976

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/479516143/how-to-download-minecraft-for-free-on-your-phone-game-hack PDF link annotation
    • https://tokunfome.com.br/images/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/robux-no-verification_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-free-spins-hack-download_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-can-i-get-robux_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-hack-apk-facebook-login_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://youtuIn 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
stream_003_off00004af3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AF3 28148 bytes
SHA-256: 953387f6ee9c26e0cc70ec7e43455822e91004c58fb413b42ebba5f384e0db94
font_01_sfnt_off0000889e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x889E 18912 bytes
SHA-256: 9fc98a0c1d4979ba11bfefb4e7a2ffed51dbf00c4e0419c11e74f5ed326d6caf

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