Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6cefca8ecfd0f05…

MALICIOUS

PDF

50.5 KB Created: 2021-06-10 20:50:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 145eec91b6534340c5467a1ab708a89a SHA-1: 134ac318f6a8e99f089c2f129506f0eaf65408e0 SHA-256: d6cefca8ecfd0f05fb5cc18793805c56b27bbd95e84bb1cf89bfb8728036c0a0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document uses a lure related to game cheats and currency, a common tactic for advance-fee scams and malware distribution. It contains embedded URLs pointing to potentially malicious files, suggesting the document's purpose is to trick users into downloading a second-stage payload. No scripts were extracted, but the presence of multiple suspicious URLs and the ML classifier's high confidence indicate a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9779

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.tw/app/431946152/hack-roblox-jailbreak-2021-money-game-hack
    • http://www.pustaka.pn-calang.go.id/repository/free-robux-please_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-pc-free_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-spin-link-2021_GM406889139.pdf
    • http://pustaka.pn-calang.go.id/repository/free-robux-codes-generator_GM431946152.pdf
    • http://pustaka.pn-calang.go.id/repository/groups-that-give-robux-for-free_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/free-spins-coin-master-2021-no-verification_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/roblox-inappropriate_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/free-robux-generator-2021_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-app-2021_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-ios-cydia_GM406889139.pdf
    • http://pustaka.pn-calang.go.id/repository/robux-free-hair-2021_GM431946152.pdf
    • http://pustaka.pn-calang.go.id/repository/free-robux-redeem-codes_GM431946152.pdf
    • http://pustaka.pn-calang.go.id/repository/free-minecraft-mods_GM479516143.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-daily-free-spins-hack_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/free-halloween-stuff-roblox_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/tryrbx-site-free-robux_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/roblox-free-robux-com_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/how-to-hack-peoples-roblox-accounts_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-spins-link-facebook_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/robux-glitch-hack_GM431946152.pdf
    • https://www.bandicam.com
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005201.bin
f915e3ee1682816b26758cad0063f5005fd0c1cfac12ab9388d1e76f1a378f3a		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5201 28624 bytes
font_01_sfnt_off000092d2.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92D2 5696 bytes
font_02_sfnt_off00009fe4.bin
64aeaea52b4eeb43655137cbb7ead126626be38227a9b3c1c33e146c638a2da8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FE4 19244 bytes

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