Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8f8a3aa87cff7e0…

MALICIOUS

PDF

34.4 KB Created: 2021-07-04 19:15:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c25ee777d2b98f07166d55b57f7e24b9 SHA-1: 3e4188dac7c4ac667ae74709c06e28d44b7cc7b7 SHA-256: e8f8a3aa87cff7e0bc0b3e0780615b4b69e1dce0789bd6b1ed78412e1aa038a6
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 0.9980

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.tw/app/431946152/how-to-get-free-unlimited-robux-game-hack PDF link annotation
    • http://cintabaca.org/katalog/repository/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-have-free-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/offers-to-complete-and-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/hack-for-roblox-in-jail-break_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/robux-generater-hack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/pubg-90-uc_GM1330123889.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-a-couple-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/uncopylock-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/roblox-mods-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/gift-card-robux-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/military-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/get-roblox-clothes-for-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/hack-de-roblox-deathrun-descargar_GM431946152.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_off00003029.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3029 21716 bytes
SHA-256: a6a27ef0f1532eb854f7d39dced33c100259a14bfa742d6b785473a1a43a7eb1
font_01_sfnt_off00005fc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC7 19612 bytes
SHA-256: 9f90138c9e24558c53d7d73a6f9335c7ab378dcf12bc1965008c03c765cdf622

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