Malicious PDF — malware analysis report

Static analysis result for SHA-256 11db5f49cbde9454…

MALICIOUS

PDF

47.3 KB Created: 2021-06-03 05:56:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 93a025d27891b356cc2153a9c392d750 SHA-1: 4637950332e807b61b6392c9d590268a7485e614 SHA-256: 11db5f49cbde94549b45208ce1b2ea3c6c2e18930e387c3b44061a9b23782d5e
82 Risk Score

Malware Insights

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

This PDF document employs social engineering tactics, presenting itself as a "Minecraft Diamond Finder Hack" to trick users into executing commands. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent, likely to download and execute a second-stage payload. The document body and heuristics suggest a ClickFix-style attack, aiming to bypass security measures by directly instructing the user to run a command.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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.online/app/479516143/minecraft-diamond-finder-hack-game-hack PDF link annotation
    • https://ezgolfer.com.tw/image/data/files/how-to-make-a-free-server-in-minecraft-java_GM479516143.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-robux-sign_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-hacks-free-spins_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/minecraft-pe-free-apk_GM479516143.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/download-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-app-hack_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/roblox-password-hacker_GM431946152.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-realistic-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • https://ezgolfer.com.tw/image/data/files/free-minecraft-bedrock-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000520b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x520B 25108 bytes
SHA-256: 24a086219efdce200573632ad7cf1a8dfea82c5c4123d754a0474bd558d0f6cc
font_01_sfnt_off00008bbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BBC 2856 bytes
SHA-256: 8c5d9bcb386d88c7f99323d8d482e46ea21dea038a5b842744dd5d39b26b2c44
font_02_sfnt_off00009593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9593 18484 bytes
SHA-256: 265962787b73e694aac7c67ed987488fc8d8021a4c66c1127c37ccae154b779c

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