Malicious PDF — malware analysis report

Static analysis result for SHA-256 2efc3d0d404e9317…

MALICIOUS

PDF

44.2 KB Created: 2021-06-02 05:54:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fade032b74ebb4fc5e7b9fde55605628 SHA-1: 5777e5647ae3bc42f387faa934ee76dd60a85f21 SHA-256: 2efc3d0d404e93174a81c929b94407fcde4a773efd6ee4fdfea8c1ae0c5bf404
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick the user into interacting with the document. It also embeds external URLs, one of which is associated with a malicious machine learning classification. The presence of these elements suggests the document is intended to facilitate the download of a second-stage payload, likely via the embedded malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/479516143/how-to-create-a-minecraft-server-for-free-game-hack
    • http://www.gadanie.lv/images/roblox-cheat-robux_GM431946152.pdf
    • http://www.gadanie.lv/images/coin-master-hack-without-verification_GM406889139.pdf
    • http://www.gadanie.lv/images/free-spins-from-coin-master_GM406889139.pdf
    • http://www.gadanie.lv/images/how-to-hack-people-in-roblox_GM431946152.pdf
    • http://www.gadanie.lv/images/robloxfun-com-robux_GM431946152.pdf
    • http://www.gadanie.lv/images/coin-master-free-spins-link-today-new_GM406889139.pdf
    • http://www.gadanie.lv/images/how-to-make-a-minecraft-server-for-free_GM479516143.pdf
    • http://www.gadanie.lv/images/coin-master-claim-free-spins_GM406889139.pdf
    • http://www.gadanie.lv/images/roblox-free-robux-hack_GM431946152.pdf
    • http://www.gadanie.lv/images/coin-master-free-spins-link-today-facebook_GM406889139.pdf
    • http://www.gadanie.lv/images/best-free-minecraft-server-hosting_GM479516143.pdf
    • http://www.gadanie.lv/images/robux-generator-no-survey_GM431946152.pdf
    • http://www.gadanie.lv/images/free-games-like-roblox_GM431946152.pdf
    • http://www.gadanie.lv/images/earn-free-robux-on-roblox_GM431946152.pdf
    • http://www.gadanie.lv/images/free-spins-coin-master-links_GM406889139.pdf
    • http://www.gadanie.lv/images/coin-master-free-spins-cash_GM406889139.pdf
    • http://www.gadanie.lv/images/free-coins-coin-master-link-2021_GM406889139.pdf
    • http://www.gadanie.lv/images/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdf
    • http://www.gadanie.lv/images/hack-coin-master-apk-ios_GM406889139.pdf
    • http://www.gadanie.lv/images/coin-master-daily-bonus-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000530e.bin
3f58e6f2247f4da9b9a8752e3172a928ba3053ce22d6547bdef8675f82f710f0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x530E 24708 bytes
font_01_sfnt_off00008aec.bin
060fb71443e6007603a371ac142d4c0d51e0ba8cefae348522c79638c30c3a2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AEC 17988 bytes

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