Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e5fd0c90f5c56b1…

MALICIOUS

PDF

46.9 KB Created: 2021-05-14 21:00:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 960ead1eb19cdd15548740198bdeba90 SHA-1: 08281e56f8dfdfc5237040015980e8d82416005b SHA-256: 0e5fd0c90f5c56b1e502f0f478bedec3805abc3dee2fcdd410f2d739064bf9ec
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 0.8948

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/406889139/coin-master-game-legitimate-hack-without-signing-up-or-shareing-game-hack PDF link annotation
    • https://jp.esuhai.com/upload/files/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/withdraw-robux_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/hackear-coin-master-espaol_GM406889139.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/give-free-robux_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/online-coin-master-free-spin-app_GM406889139.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/free-robux-website_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/minecraft-free-education_GM479516143.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/free-draw-roblox_GM431946152.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://jp.esuhai.com/upload/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049d8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49D8 25428 bytes
SHA-256: 0ab97d719a279886577c7950f2878142d8bc69d3e403917c30a3a942355fc0a0
font_01_sfnt_off000084d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84D3 4020 bytes
SHA-256: dbaa9c12d07f3632734605f1d5d6dee3ad5af1f57488e46d95dab68b383f08c5
font_02_sfnt_off0000925a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x925A 19128 bytes
SHA-256: dc9a87bd67df9bb84126e25e8cfd6c542a2bbbef26e11d73549ffc23dff564de

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