Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaff1bbd314fc927…

MALICIOUS

PDF

49.1 KB Created: 2021-06-03 19:31:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a6350b4ed0bb89dbc0d5862bab86dee5 SHA-1: d348955b627d9f3de9c72ff1c500851dc242800c SHA-256: aaff1bbd314fc9270602acc7e5359ccb100bb5c2abca5c3b5869a378d37d2f80
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document exhibits characteristics of an advance-fee scam, using lures related to 'free Robux' and game hacks to entice users. It contains multiple embedded URLs pointing to potentially malicious content, including one at 'https://netcdn.online/app/431946152/free-robux-safe-game-hack'. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a workflow designed to lead the user to external malicious resources, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/431946152/free-robux-safe-game-hack
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/get-free-robux-generator_GM431946152.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/bloxpink-free-robux_GM431946152.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/how-to-get-free-robux-inspect_GM431946152.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/coin-master-hack-apk-download-2021_GM406889139.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-roblox-girl-hair-not-a-model_GM431946152.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-minecraft-skins-ps4_GM479516143.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/coin-master-free-spins-hack-ios_GM406889139.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/coin-coin-master-hack_GM406889139.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/roblox-cheat-robux_GM431946152.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/how-to-earn-free-robux_GM431946152.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-robux-without-verification-2021_GM431946152.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/roblox-army-free-robux_GM431946152.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/how-do-u-get-free-robux-2021_GM431946152.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/hack-game-plus-com-coin-master_GM406889139.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/coin-master-apk-hack-mod-download_GM406889139.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/free-minecraft-accounts-2021_GM479516143.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/tiktok-editor-free-download_GM835599320.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/best-free-roblox-outfits_GM431946152.pdf
    • https://e-learning.mtsdditakkalasi.com/__statics/gudangsoal/files/worst-client_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005488.bin
c85b674046dc7ef2687619e4d7bd267e09e2a06d165befc8fcf6757b774c52d6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5488 25892 bytes
font_01_sfnt_off00009061.bin
450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9061 5696 bytes
font_02_sfnt_off00009d73.bin
393a0339ec2761f14ea9b29efa8c9c5fc9788b4979bd41a030a3ecef46023b5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D73 18244 bytes

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