Malicious PDF — malware analysis report

Static analysis result for SHA-256 b350a6a40253e96f…

MALICIOUS

PDF

45.3 KB Created: 2021-05-11 05:40:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1367a30e4f49ef13304010084a04d2f3 SHA-1: 69ecc9bf0bb2b917a0edd613632598a20c2af5e7 SHA-256: b350a6a40253e96fd4484d1b8f3756e1d4d0131501c5e50656aa950eb6c7650e
82 Risk Score

Malware Insights

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

The document contains lures typical of advance-fee scams, specifically referencing "Free Robux Giveaway" and "live game hack" to entice users. It embeds multiple URLs, including one pointing to a suspicious domain, likely intended to lead the user to a malicious site or download. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

Heuristics 4

  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.xyz/app/431946152/free-robux-giveaway-live-game-hack
    • https://repository.stikesindramayu.ac.id/repository/coin-master-free-gifts_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-robux-with-no-human-verification_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/claim-free-robux-button_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/roblox-hack-me_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/real-coin-master-hack_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/coin-master-free-bonus_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/coin-master-free-spins-android_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-roblox-promo-codes-for-robux_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/coin-master-apk-hack-2021-ios_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/coin-master-free-500-spins-link_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-printable-roblox-coloring-pages_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/bloxpage-free-robux_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/is-it-possible-to-get-free-robux_GM431946152.pdf
    • https://repository.stikesindramayu.ac.id/repository/how-to-get-minecraft-for-free-on-nintendo-switch_GM479516143.pdf
    • https://repository.stikesindramayu.ac.id/repository/free-coins-on-coin-master-without-verification_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/coin-master-hack-ios-download-2021_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/mcpe-master-hack-unlimited-coins-download_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/coin-master-15-free-spin-link-today_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/coin-master-hack-game-download-mod-apk_GM406889139.pdf
    • https://repository.stikesindramayu.ac.id/repository/coin-master-game-hunter_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b73.bin
4779668c69ee3b308b03468948721c884626d07cf1bd70e9e4120752eed251c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B73 24760 bytes
font_01_sfnt_off0000831d.bin
77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x831D 2832 bytes
font_02_sfnt_off00008cce.bin
3db94d24ba3abe2bdb9d310b65f8480e65e9005ffe127367b6d2ef8ae08c9d7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CCE 18820 bytes

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