Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c669484b88c5cbf…

MALICIOUS

PDF

34.1 KB Created: 2021-07-05 07:07:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f0ae1f4cdc53cc42a41660e8fa78c463 SHA-1: a665501c493e01d39b606f9816b8f505f374c039 SHA-256: 7c669484b88c5cbf9e8de0f52e8e413a4b15a33d14d8a9102b978d5b1a81e832
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a document body that explicitly mentions free game currency and hacks for popular games like Minecraft and Roblox. The primary URL, http://netcdn.tw/app/479516143/minecraft-coins-free-game-hack, suggests a download lure. The presence of these lures and the high ML classifier score indicate a strong likelihood of this document being used to distribute malware or lead users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.tw/app/479516143/minecraft-coins-free-game-hack
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-roblox-gift-card_GM431946152.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/works-how-to-get-free-robux-2021-fast-and-easy_GM431946152.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/freecoins_GM406889139.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021-today_GM406889139.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/escape-room-roblox-cheats_GM431946152.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/roblox-promo-code-to-get-free-robux_GM431946152.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/how-to-hack-any-roblox-account_GM431946152.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/earn-robux-today_GM431946152.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/cheats-for-roblox-how-to-get-free-robux-2021_GM431946152.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/hack-coin-master-nyc_GM406889139.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/roblox-land-free-robux_GM431946152.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/how-do-u-scamm-people-to-get-free-robux_GM431946152.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/coin-master-mod_GM406889139.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-tiktok-likes-75_GM835599320.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/how-to-hack-people-in-roblox_GM431946152.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/wurst-mc_GM479516143.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/roblox-gas-station-simulator-cheat_GM431946152.pdf
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/coin-master-free-spin-link-daily_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003157.bin
8449b1355fa3f2692d86c98ab2d9f36680936d864b453ef3600564f49bf27199		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3157 22508 bytes
font_01_sfnt_off0000635d.bin
57addac7b62f6982da03a34d469d6734b49e3a67e494fbb995a28ec062f8da05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x635D 17996 bytes

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