PDF static analysis report

Static analysis result for SHA-256 3a37a2db04d09ed9…

SUSPICIOUS

PDF

42.3 KB Created: 2021-05-14 20:23:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 302f5ff08ef9e649cd26b0243d7765a6 SHA-1: 212c96e9c111f4383dfc0ec3d3689d33dafbd61f SHA-256: 3a37a2db04d09ed911700d7c83bb1fff0dddbd63869ddf7f8edc19d24f1ac494
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a heuristic firing for an external URI, indicating it is designed to redirect users to malicious content. The document body, though partially garbled, suggests a lure related to game hacks ('Coin Master Village Cost'), a common social engineering tactic. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is intended to facilitate the download of 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-village-cost-game-hack PDF link annotation
    • https://www.kaojen.com.tw/upload/files/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/free-roblox-gear_GM431946152.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/coin-master-free-spins-ios_GM406889139.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/roblox-demon_GM431946152.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/coin-master-attack-block-hack_GM406889139.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/how-to-get-free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.kaojen.com.tw/upload/files/coin-master-real-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_off0000492a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x492A 25596 bytes
SHA-256: b22e05a1cfd057441c1fbb2b4dd7b1529a23bc8272a1967f9e29736ca849373c
font_01_sfnt_off00008384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8384 18044 bytes
SHA-256: a8028c0297769aa7dba6e0a54b0a1dc6e5838f70d2f821663f5d8e8c2692d7c8