Malicious PDF — malware analysis report

Static analysis result for SHA-256 31a9ffb845609c37…

MALICIOUS

PDF

46.3 KB Created: 2021-05-14 17:14:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6d7c1f1136ab818b280df03cc0cdc358 SHA-1: adb8623ebb768e581c5b2cd1f3aff865019cfef5 SHA-256: 31a9ffb845609c37eacd7ed1e3e4c5f71efce973b9e134e6c789f81982ee0b53
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a visual download lure, suggesting it is designed to trick users into downloading a malicious file. The primary URL points to a resource disguised as a game hack, which is a common social engineering tactic. The document body, though heavily obfuscated, contains references to game hacks and download links, reinforcing the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/479516143/minecraft-hack-ios-game-hack
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/how-many-levels-are-in-coin-master_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/oginject-co_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-link_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/can-you-hack-coin-master_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/hack-a-game_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/earn-free-robux-on-roblox_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-no-survey_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/roblox-hack-apk_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/como-hackear-juego-coin-master_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-free-spin-2912-2021_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/make-your-own-minecraft-server-free_GM479516143.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-game-free-download_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-hack-pc-2021_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/hack-coin-master-without-human-verification_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/coin-master-daily-gifts_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-robux-no-verification-needed_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-spins-and-coins-on-coin-master_GM406889139.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/roblox-land-free-robux_GM431946152.pdf
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/password-free-roblox-accounts_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d2e.bin
07310978f19b1b891342d9b495a983c7ee99fbb62576345e55e78c8dd37efd1f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D2E 26156 bytes
font_01_sfnt_off0000894f.bin
3811f2fb1880daf4953efcc9c7427d9b438bced237490b00be4a6ec3ecea79e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x894F 3092 bytes
font_02_sfnt_off000093fa.bin
4f62ffa84bec6987c7bb4a965c21c3f9081c6d15a1e2ce4cbfb05006ff20176d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93FA 17880 bytes

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