Malicious PDF — malware analysis report

Static analysis result for SHA-256 972fca57668e13b2…

MALICIOUS

PDF

43.6 KB Created: 2021-05-15 02:15:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: d9d63c18a861b547ac74870c23cddfcb SHA-1: 32fd1d2930f79693ea3783937048b9372089d683 SHA-256: 972fca57668e13b267cc412fdfa3a81252a0b91b62dd3f0af8d5f49f1f8633c7
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA to lure the user into downloading a file, likely a malicious payload. The embedded URL points to a resource that appears to be related to game hacks or cheats, further supporting the malicious intent. No scripts were extracted, but the overall structure and heuristics indicate a social engineering attack designed to trick the user into executing a downloaded file.

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/406889139/coin-master-free-spins-2021-apk-game-hack PDF link annotation
    • http://www.thalanghospital.go.th/UserFiles/File/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/robux-app_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/minecraft-bedrock-edition-pc-free_GM479516143.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/roblox-games-with-free-radio_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/mosttechs-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/robux-free-online_GM431946152.pdfIn PDF document text
    • http://www.thalanghospital.go.th/UserFiles/File/free-robux-generator-for-kids_GM431946152.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_off00004bb5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BB5 25664 bytes
SHA-256: c608bc93832b015b88630d1a8aff4042a960fafff1dbd4a33f36f04201a31e2f
font_01_sfnt_off00008787.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8787 18456 bytes
SHA-256: 36172b8199ed8392a16c1209cf3a913f384f74be331676b8a446cb929dbf73c8

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