Malicious PDF — malware analysis report

Static analysis result for SHA-256 e841f9ae43d00616…

MALICIOUS

PDF

47.6 KB Created: 2021-05-21 23:39:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c17094674bfe6a5b28d0ff544e501179 SHA-1: 649ad09366ab77a978bf04d6f4a1ee73d76acb9b SHA-256: e841f9ae43d0061610a29b684592310bb2471d70d84a30f0aee10cc6b26bddea
82 Risk Score

Malware Insights

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

The PDF document contains social engineering lures, including a fake download button and instructions to execute commands, consistent with ClickFix attacks. It directs users to a URL that likely hosts a malicious payload disguised as a game download. No scripts were extracted, but the embedded URLs and social engineering tactics strongly suggest a malicious intent to trick the user into downloading and executing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7549

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.xyz/app/479516143/minecraft-free-download-unblocked-game-hack
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdf
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdf
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-app_GM406889139.pdf
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/hacks-for-coin-master-game_GM406889139.pdf
    • https://elma.mtsn10jakarta.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000038f5.bin
6bc728bf5005b9d6a764a2675479f364736dc18fc8a8c41195b9b03ed71c8a30		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x38F5 31128 bytes
font_01_sfnt_off00007e32.bin
ca78e69674294335d52a7958f23c02089d76e094fa22d7ce38d710853bb376cd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E32 4532 bytes
font_02_sfnt_off00008d44.bin
f58a8a4766967f143c5ad0ce3770f8b16f6e1f096bdec44aba0d5cd728fe8be5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D44 2852 bytes
font_03_sfnt_off0000974e.bin
351b73efa1cf4358b07b283040b01ec481d6b0b50516ad4f4e94e13994b713ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x974E 18804 bytes

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