Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad98f318017b7c54…

MALICIOUS

PDF

33.7 KB Created: 2021-06-21 01:17:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e40cc845bf0e568215e27db844d2eadc SHA-1: 54a8f40e274201a9d3c60a2637abc9c5beab8df3 SHA-256: ad98f318017b7c546094ad3ea5302a48b9fa76067fce24d929eedc7d23536f28
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are related to game hacks and free in-game currency, indicating a lure for users to download potentially malicious files. The ML classifier strongly flagged this PDF as malicious, and the presence of a download button lure reinforces this assessment. The document body and embedded URLs suggest a phishing attempt disguised as a guide or hack for popular games.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/how-do-you-get-free-robux-fast-game-hack PDF link annotation
    • https://www.imagevideo.info/images/guide--coin-master-free-tips_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/how-to-get-stuff-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/roblox-bandit-simulator-hack_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/how-do-you-get-free-robux-on-roblox-ipad_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/how-to-hack-in-roblox-apocalypse-rising-2021_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-skeptic-roblox_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/minecraft-wurst-client_GM479516143.pdfIn PDF document text
    • https://www.imagevideo.info/images/slurp-roblox-hack-discord-server_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/how-do-load-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://www.imagevideo.info/images/free-coins-app-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.imagevideo.info/images/can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.imagevideo.info/images/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.imagevideo.info/images/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002cf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF9 21912 bytes
SHA-256: 14379674c5b5effb8763896a208b702d3d366ac54457ea70d01e609a157289ce
font_01_sfnt_off00005d86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D86 19316 bytes
SHA-256: 7e114a656b4193798f42e24920d2572b541e54c3825a868aa6f529bcd9aa4350

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