PDF static analysis report

Static analysis result for SHA-256 113e221e061378f0…

SUSPICIOUS

PDF

43.0 KB Created: 2021-05-13 12:36:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d0c8572bb944c3a85846b60d892dc0c4 SHA-1: e3719c9836aa16aa239d09225e5f530a9c8c0176 SHA-256: 113e221e061378f0a6ef530dc99512c7469998b7196b210dbace7f58bd192472
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs and a document body that advertises hacks and free currency for mobile games, strongly suggesting a lure for users to download malicious content. The ML classifier also flagged this PDF as malicious. No scripts were extracted, but the presence of external URIs indicates a potential download or redirection to a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/406889139/coin-master-hack-spins-android-game-hack PDF link annotation
    • https://www.yuko.com.tw/upload/files/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/do-robux-generators-work_GM431946152.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/toolbox-mod_GM479516143.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/www-coinmaster-com_GM406889139.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/free-spin-link-coin-master_GM406889139.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/coin-master-free-spin-app-2021_GM406889139.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/free-roblox-glasses_GM431946152.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/coin-master-free-spins-link-blogspot-april-2021_GM406889139.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.yuko.com.tw/upload/files/coin-master-invite-friends-hack_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
stream_003_off0000474f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x474F 27800 bytes
SHA-256: 33645d4a95f0c168e140d4ad3b9b6e6c572f576d1eddd5c269e57dc65864dbbd
font_01_sfnt_off00008640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8640 18068 bytes
SHA-256: 19b8e36e6032ad76840d77aaed14847fefc8df0cce38f80c2a4b9556f81b8b13