Malicious PDF — malware analysis report

Static analysis result for SHA-256 cce9d56c122a7d8a…

MALICIOUS

PDF

44.9 KB Created: 2021-05-11 22:03:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fe9e82a4d0faf96c35e51a19887f38bc SHA-1: 3a40c00238b42899967510c1e00b7a5a29cc9991 SHA-256: cce9d56c122a7d8a186bbbe5633f896d71a1c91d2f9cac607bfa791495c5c929
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample is a PDF document flagged by a machine learning classifier as malicious. It contains a fake CAPTCHA lure, a common social engineering technique to trick users into interacting with malicious content. The document also embeds a URL that likely leads to a second-stage download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/431946152/free-robux-games-that-actually-work-game-hack
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-spins-coin-master-blogspot_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-coins_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/aristois-minecraft-hack_GM479516143.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-spin-coin-master-hack-2021_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-cheats-2021_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/hack-roblox-players_GM431946152.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/roblox-free-clothes-generator_GM431946152.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/minecraft-windows-10-hacks_GM479516143.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/robux-hack-free-robux_GM431946152.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-daily-free-coins-link_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-hack-https-coinms-net_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/bux-gg-robux-free_GM431946152.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-minecraft-skin-packs_GM479516143.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-haktuts_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-coins-2021-coin-master-link_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/download-apps-for-robux_GM431946152.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-pc-game-free-download_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-spins-and-coins-from-coin-master-game_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/www-robux-us_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d0d.bin
ba659603fea9e9d4de76119e972c4086c62131750305d7dc6c4f73a6f4fd44bd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D0D 25968 bytes
font_01_sfnt_off00008a25.bin
2bd118a57b53ff37cab680797aee460eb59fed046ceba4ed0277135d7eae5baa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A25 19392 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.