Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9e7e03f9cfd5703…

MALICIOUS

PDF

35.3 KB Created: 2021-07-02 00:39:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 24d5f7f92130396f327bb96394f0ff22 SHA-1: eefb86dfdf0298e3207d11294e6de622cd673bd3 SHA-256: c9e7e03f9cfd570311f3c0cc15884136078f6ae62a526bda09b1740c70e0b17a
82 Risk Score

Malware Insights

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

The document body and embedded URLs promote a 'free Robux and Tix hack', indicating a lure for users seeking in-game currency. The presence of a high-confidence ML classifier firing and a heuristic for password-protected archive handoff suggests this PDF is designed to trick users into downloading a payload, likely disguised as a game hack or cheat. The primary URL points to a suspicious domain associated with such lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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 http://netcdn.co/app/431946152/free-robux-and-tix-hack-no-survey-game-hack
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/coin-master-link_GM406889139.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/pokemon-go-basic-vs-premium-rewards_GM1094591345.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/how-to-free-robux_GM431946152.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/free-spin-coin-master-online_GM406889139.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/easy-free-spins-coin-master_GM406889139.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/play-minecraft-for-free_GM479516143.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/how-to-get-free-robux-no-survey_GM431946152.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/coin-master-official-fan-page_GM406889139.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/free-robux-hacker-us_GM431946152.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/what-is-coin-master_GM406889139.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/coin-master-daily-free-rewards_GM406889139.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/hack-para-robux-real_GM431946152.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/how-to-hack-someone-on-roblox_GM431946152.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/youtube-how-to-get-free-robux_GM431946152.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/free-robux-by-watching-ads_GM431946152.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/free-robux-without-verification_GM431946152.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/coin-master-free-foxy-food_GM406889139.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/minecraft-112-hacked-client_GM479516143.pdf
    • https://learningma.alkautsarkrw.web.id/__statics/gudangsoal/files/minecraft-skins-download-free_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031a5.bin
a16e93a8f2ce1d85fc9a35795db88e8c04c54bd122192eedeb3e015d96154c2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31A5 22376 bytes
font_01_sfnt_off00006396.bin
c7e7c86005c3f6dba36dbf682026343dd5ff2566f27ea273ad13ea6ac11bd0b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6396 19472 bytes

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