Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd4bf76c107506d5…

MALICIOUS

PDF

47.6 KB Created: 2021-06-07 17:31:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 76bcbf2accfd98b26ac4ff45d88059e8 SHA-1: af3cfb1cda79ae3e620eee938032aa0d914b6ef7 SHA-256: dd4bf76c107506d53ed7954a8f1155aa27771d0af60c4c72df8390c6bc8e42bd
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 0.9832

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/unlimited-robux-hack-2021-game-hack PDF link annotation
    • http://cepobajodeva.com/images/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://cepobajodeva.com/images/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/www-free-robux_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://cepobajodeva.com/images/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/if-i-uninstall-minecraft-can-i-reinstall-it-for-free_GM479516143.pdfIn PDF document text
    • http://cepobajodeva.com/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/free-gifts-coin-master_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://cepobajodeva.com/images/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • http://cepobajodeva.com/images/free-minecraft-coins_GM479516143.pdfIn PDF document text
    • http://cepobajodeva.com/images/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://cepobajodeva.com/images/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • http://cepobajodeva.com/images/roblox-ban_GM431946152.pdfIn PDF document text
    • http://cepobajodeva.com/images/how-to-get-free-robux-100-working-2021_GM431946152.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_off00005153.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5153 29512 bytes
SHA-256: 0f4a364951527298f6e505a42f5357e3a90ade84018d582ef556499e0a7586b2
font_01_sfnt_off000093f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93F6 19568 bytes
SHA-256: e01aaafeaeecb8749aeb80b7b0b248ac98b3d5b7fa1d6af2324588e2dc2f691d

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