Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f980a45aae00612…

MALICIOUS

PDF

43.4 KB Created: 2021-05-15 08:59:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e922fdf60b3785133838c20c3dbb1a2f SHA-1: 9552347752d1ccf34e6c921c3dc83aeba150e282 SHA-256: 3f980a45aae00612c4df1c0f4540e203e1ef2524dd18cf495cc6dc16b286b516
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, encouraging users to click on an embedded link. This link, 'https://netcdn.xyz/app/479516143/how-can-i-get-minecraft-for-free-game-hack', likely leads to the download of a second-stage payload. The document's content and the presence of a download lure strongly suggest a phishing or social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-can-i-get-minecraft-for-free-game-hack
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/free-spins-coin-master-hack_GM406889139.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/minecraft-esp_GM479516143.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-on-mobile_GM431946152.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/coin-master-32-android-mod-hack-apk-download_GM406889139.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/get-free-cards-in-coin-master_GM406889139.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/claim-free-robux_GM431946152.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/robux-for-offers_GM431946152.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/download-minecraft-free-hiapphere_GM479516143.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/how-to-get-free-shirts-on-roblox_GM431946152.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/free-chest-coin-master_GM406889139.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/coinmasterfreespinlink_GM406889139.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins-today_GM406889139.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/roblox-games-to-play-for-free_GM431946152.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/coin-master-free-cards-link-2021_GM406889139.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/free-spins-from-coin-master_GM406889139.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/minecraft-pe-apk-download-free-015-0_GM479516143.pdf
    • https://elearning.mtsalkhairaatternate.sch.id/__statics/gudangsoal/files/roblox-bloxburg-free-money_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000513a.bin
15a42cbfd267355fa9948a345e535ee8334c82bd95dcba9c66d517881f4a1379		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x513A 24784 bytes
font_01_sfnt_off00008889.bin
1780a854c5ecbb5a6dec58bf2aafa1430e4c4f4d2029e52ddf9488ce5dd697b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8889 17872 bytes

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