Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1a093b40ea79c39…

MALICIOUS

PDF

42.1 KB Created: 2021-05-30 06:29:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e60d796cbd0e15966c73d8d4ea91ea35 SHA-1: b8d5c0343c21b5b20ce900e4356a9d2f5b875cf5 SHA-256: e1a093b40ea79c39cda25d16f3ba48b47f46cdb512ff993fe5ca8ca2726a0210
122 Risk Score

Malware Insights

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

The PDF document contains embedded links and a lure to a "free Minecraft Alt Generator" which is a common social engineering tactic. The document also contains instructions that suggest a 'ClickFix' social engineering attack, prompting the user to execute commands. The ML classifier also flagged this PDF as malicious with high confidence. The primary IOC is the URL used in the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/free-minecraft-alt-generator-game-hack
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-for-kids_GM431946152.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/minecraft-classic-free_GM479516143.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/roblox-hacked-com-2021_GM431946152.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-paying_GM431946152.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/how-do-i-get-free-robux_GM431946152.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/free-robux-generator-no-verification_GM431946152.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/coin-master-free-spins-link-2021_GM406889139.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/how-to-hack-peoples-roblox-accounts_GM431946152.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/how-to-get-free-spins-in-coin-master_GM406889139.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/coin-master-daily-free-spins-and-coins_GM406889139.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/free-minecraft-server-hosting-24-7_GM479516143.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/free-robux-generator-2021_GM431946152.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/free-robux-generator-for-kids_GM431946152.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/free-coin-coin-master_GM406889139.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/robux-hack-generator_GM431946152.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/rblx-city-free-robux_GM431946152.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/free-spins-for-coin-master-2021_GM406889139.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/free-spins-and-coins-coin-master_GM406889139.pdf
    • https://www.cryptovision.com/wp-content/uploads/fsqm-files/free-modded-minecraft-server_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004a6d.bin
857875bfe4054daeb6a6cd00bfd9c7e402727a4d4ee027d61c1a415cb84b21c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A6D 25252 bytes
font_01_sfnt_off00008401.bin
66ae3cfb6d310f144f42187aaa203441353bb0cc88c1a3915b2f7a14fa3c41b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8401 17784 bytes

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