PDF static analysis report

Static analysis result for SHA-256 a9b5a7410f4b6afc…

SUSPICIOUS

PDF

44.1 KB Created: 2021-06-08 10:15:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: fce3cfb3a45ee2ffe2c179337690aa83 SHA-1: 1328861fb1d57c83d79b6c4d9147ca38a6d012af SHA-256: a9b5a7410f4b6afc7746a6c5cb52c68b4568c2f95304b85719e2277a400940d8
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded URLs and a document body that suggests a lure for free in-game items, likely to trick users into downloading a payload. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple suspicious URLs reinforces this assessment. The document's purpose appears to be facilitating the download of a second-stage malicious file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 3

  • 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/can-i-get-robux-for-free-game-hack PDF link annotation
    • https://cosmosocean.com.tw/upload/files/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/optifine-mcpe_GM479516143.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-roblox-gfx_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-spin-link_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-play-minecraft-with-friends-for-free_GM479516143.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/links-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
    • https://cosmosocean.com.tw/upload/files/coin-master-free-daily-spins-link_GM406889139.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_off000051e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x51E3 24384 bytes
SHA-256: 389358f0edb90a68e1f656ff22191f62b0464781ad1c17ffa88577a6a5e21557
font_01_sfnt_off00008979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8979 18344 bytes
SHA-256: 56a64ad9af2fab004080c55c49ec35472f3c2134e95e40197be892b268dd39d5