Malicious PDF — malware analysis report

Static analysis result for SHA-256 33f5f44ca173ce9f…

MALICIOUS

PDF

42.1 KB Created: 2021-05-12 07:49:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a77d7f7c8b2e2d7b81e76b5a5e870fe1 SHA-1: 7b8a064bc9ccbe444b0fe6568c7b2f58a7a54b23 SHA-256: 33f5f44ca173ce9fa02bbab002d8b81b9cbf5134a8af23cce7119f417d4f18cf
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA or verification prompt to trick users into interacting with it, likely to initiate a download or redirect to a malicious URL. The embedded URL and numerous other URLs point to sites offering game-related cheats or hacks, suggesting a lure for potentially unwanted or malicious software. No scripts were extracted, but the PDF structure and heuristics indicate a malicious intent to exploit user interaction.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/can-you-get-robux-for-free-game-hack
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-minecraft-java-edition_GM479516143.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-robux-app-2021_GM431946152.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-roblox-hack_GM431946152.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-robux-ad_GM431946152.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-hack-apk-free-download_GM406889139.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-robux-no-offers_GM431946152.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master-2021_GM406889139.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/wahoogaming-co-free-robux_GM431946152.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-robux-youtube_GM431946152.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-coins-and-free-spins-coin-master-2021_GM406889139.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/free-coins-coin-master-2021_GM406889139.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-free-spins-link_GM406889139.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/xray-hack_GM479516143.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/get-free-robux-no-verification_GM431946152.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/how-to-get-free-robux-on-mobile_GM431946152.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/how-to-download-wurst_GM479516143.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/roblox-com-free-robux_GM431946152.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-master-free-food-for-pet_GM406889139.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/how-do-u-get-free-robux-2021_GM431946152.pdf
    • http://elearning-mtsn1jkt.net/__statics/gudangsoal/files/coin-game_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000049e6.bin
54ab92e8512a83a3a09b65a77c5185482f95f513c4199895351e8aeea6a162c1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49E6 24168 bytes
font_01_sfnt_off0000814f.bin
c061b59ab901ec7c7e5d17bc5fec7ace191fd36e08e64edc0ca642be8bf86a0e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x814F 18508 bytes

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