Malicious PDF — malware analysis report

Static analysis result for SHA-256 918444ea065c42c1…

MALICIOUS

PDF

48.5 KB Created: 2021-06-03 05:33:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5724f0afd6b0a95439deb301acaf6fa3 SHA-1: a6b04fa22d38dfb300044f7504c754273c10be44 SHA-256: 918444ea065c42c197fd5ad0daf0987abc8debe61dda3a7d959997e80305d5a3
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous URLs advertising free game hacks and resources, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the presence of embedded URLs and the document's content suggest it is designed to trick users into visiting malicious sites, likely to download malware or compromise accounts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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 https://netcdn.online/app/431946152/roblox-free-radio-games-game-hack
    • http://library.gkigadingserpong.org/repository/coin-master-free-spins-link-download-for-iphone_GM406889139.pdf
    • http://library.gkigadingserpong.org/repository/can-i-download-minecraft-for-free_GM479516143.pdf
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-version-ios_GM406889139.pdf
    • http://www.library.gkigadingserpong.org/repository/free-daily-spins-coin-master-2021_GM406889139.pdf
    • http://library.gkigadingserpong.org/repository/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdf
    • http://www.library.gkigadingserpong.org/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://library.gkigadingserpong.org/repository/free-private-server-roblox_GM431946152.pdf
    • http://library.gkigadingserpong.org/repository/free-bling-bling-card-coin-master_GM406889139.pdf
    • http://www.library.gkigadingserpong.org/repository/free-coins-and-spins-coin-master_GM406889139.pdf
    • http://www.library.gkigadingserpong.org/repository/robux-hack-generator_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/coin-master-hack-apk-july-29_GM406889139.pdf
    • http://library.gkigadingserpong.org/repository/how-to-get-infinite-robux_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/minecraft-pocket-edition-hack_GM479516143.pdf
    • http://library.gkigadingserpong.org/repository/free-roblox-gift-card-codes-2021_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/coin-master-200-spin-link_GM406889139.pdf
    • http://www.library.gkigadingserpong.org/repository/games-in-roblox-that-give-you-robux_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/minecraft-free-games-no-download_GM479516143.pdf
    • http://library.gkigadingserpong.org/repository/coin-master-free-spins-that-really_GM406889139.pdf
    • http://www.library.gkigadingserpong.org/repository/roblox-earn_GM431946152.pdf
    • http://www.library.gkigadingserpong.org/repository/blogspot-coin-master-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000051e8.bin
2a6a04142d21a3b3889dfaa888bfe30df4f4ea7ef65ac87d9b798563eb4bf8b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51E8 25432 bytes
font_01_sfnt_off00008c5d.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5D 5696 bytes
font_02_sfnt_off0000996f.bin
aeda22cd0ef2b9b074f99cfd520acf444fefd7e2f41371849b9ab94cfb572c76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x996F 18728 bytes

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