Malicious PDF — malware analysis report

Static analysis result for SHA-256 843f30f77dc05db9…

MALICIOUS

PDF

44.8 KB Created: 2021-06-09 04:56:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fdd98dbf37f32b43ba150fa3cb3db304 SHA-1: 8ebdf1b9d05fe2ca92a6e50aee6075074a42b94a SHA-256: 843f30f77dc05db953b69293074a4ed38934696982cb225bc19dcb46fe4afd8d
82 Risk Score

Malware Insights

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

The ML classifier and heuristics indicate a malicious PDF. The document body and heuristics suggest a lure to download a file, possibly related to game cheats or hacks, and a SE_PAYMENT_REDIRECT_LURE heuristic indicates it may also be attempting to trick users with fake payment instructions. The embedded URL points to a suspicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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 https://netcdn.tw/app/431946152/roblox-build-a-boat-for-treasure-cheats-game-hack
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/get-free-robux_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/roblox-hacks-to-get-in-people-acounts_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/microsoft-rewards-roblox_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-34-4-hack_GM406889139.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/roblox-data-breach_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-money_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/free-robux-not-a-scam_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/free-robux-card-codes_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-to-change-your-name-on-roblox-for-free_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-hack-spin_GM406889139.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-to-get-free-tiktok-coins_GM835599320.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/minecraft-hacker-skin_GM479516143.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/free-robux-games-that-actually-work-2021_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/earn-roblox_GM431946152.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/tiktok-free-jazz_GM835599320.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/free-mod-apk-coin-master_GM406889139.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdf
    • https://elearning.mtsnkarawang.sch.id/__statics/gudangsoal/files/can-i-seel-roblox-shirts-for-free_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051dd.bin
e7024b755889a62b14e28eb03636a528bb1c5ff51513ae87c5272d6d177f3919		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51DD 24816 bytes
font_01_sfnt_off00008ad4.bin
0c0c56abc52d288f24ebd5bb73a3790e7ad6ab6d3b0d3175e3ad89c6ef066582		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD4 18880 bytes

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