Malicious PDF — malware analysis report

Static analysis result for SHA-256 98da2f3c2c5511c0…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 16:46:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 4be599b984b9457ba9b299f09ae2b5b4 SHA-1: e2bad0ff7868a9456852ecf3f26b2d8dd6c6e45f SHA-256: 98da2f3c2c5511c0cf7006afc5fd21237cd1c25e6658efbad99091c2abb7d6d8
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous embedded links, many of which are presented as download opportunities for game-related hacks and cheats. The heuristic firings indicate a link farm designed to direct users to external resources, with a high ML confidence score for maliciousness. The document body and extracted URLs suggest a lure for users seeking in-game advantages, likely leading to malware or unwanted applications.

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.tw/app/431946152/free-robux-accounts-2021-game-hack
    • https://lib.unitri.ac.id/repository/roblox-free-play-online-login_GM431946152.pdf
    • https://lib.unitri.ac.id/repository/roblox-broken-bones-hack_GM431946152.pdf
    • https://lib.unitri.ac.id//repository/coin-master-hack-version-2021-free-download_GM406889139.pdf
    • https://lib.unitri.ac.id/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdf
    • https://lib.unitri.ac.id/repository/coin-master-mod-apk-hack_GM406889139.pdf
    • https://lib.unitri.ac.id/repository/can-roblox-badges-hack-u_GM431946152.pdf
    • https://lib.unitri.ac.id/repository/can-you-make-a-minecraft-server-for-free_GM479516143.pdf
    • https://lib.unitri.ac.id//repository/free-card-link-coin-master_GM406889139.pdf
    • https://lib.unitri.ac.id/repository/hacking-roblox-with-cheat-engine-64_GM431946152.pdf
    • https://lib.unitri.ac.id//repository/free-spins-on-coin-masters_GM406889139.pdf
    • https://lib.unitri.ac.id//repository/easy-free-spins-coin-master_GM406889139.pdf
    • https://lib.unitri.ac.id/repository/roblox-generator-no-human-verification_GM431946152.pdf
    • https://lib.unitri.ac.id//repository/i-want-free-robux_GM431946152.pdf
    • https://lib.unitri.ac.id/repository/best-site-for-free-coin-master-free-spin-link_GM406889139.pdf
    • https://lib.unitri.ac.id/repository/roblox-com-www_GM431946152.pdf
    • https://lib.unitri.ac.id/repository/mcpe-master-hack-unlimited-coins-download_GM406889139.pdf
    • https://lib.unitri.ac.id/repository/scripts-para-roblox-hacks_GM431946152.pdf
    • https://lib.unitri.ac.id//repository/app-store-coin-master-free-spins_GM406889139.pdf
    • https://lib.unitri.ac.id//repository/minecraft-for-laptop-free_GM479516143.pdf
    • https://lib.unitri.ac.id//repository/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002e66.bin
08df6a10c3ad4788ef1a13437856446eabd5af67c342ddbe421fb38f2085d0aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2E66 22484 bytes
font_01_sfnt_off0000607d.bin
156e97e656f4bb783494abd7ae53ecfa8912a458841a7d4a142d29130362a46d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x607D 19224 bytes

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